Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. B\u00fcy\u00fck sistemlerdeki kullan\u0131c\u0131 say\u0131s\u0131n\u0131n artmas\u0131yla beraber, her bir kullan\u0131c\u0131n\u0131n davran\u0131\u015f\u0131n\u0131 kontrol alt\u0131nda tutmak karma\u015f\u0131k bir s\u00fcre\u00e7 haline gelebilir. Peki, performans d\u00fc\u015f\u00fc\u015flerini ve g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 nas\u0131l standart hale getirebiliriz? Bu makale, Oracle veritabanlar\u0131ndaki zorunlu profil kavram\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131kl\u0131yor, nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131, uygulanaca\u011f\u0131n\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi ve performans\u0131n\u0131z\u0131 nas\u0131l g\u00fc\u00e7lendirebilece\u011finizi g\u00f6steriyor.<\/p>\n
Oracle veritaban\u0131nda profil, bir kullan\u0131c\u0131n\u0131n veya bir grup kullan\u0131c\u0131n\u0131n veritaban\u0131 kaynaklar\u0131n\u0131 nas\u0131l kullanaca\u011f\u0131n\u0131 ve parolas\u0131yla ilgili g\u00fcvenlik ayarlar\u0131n\u0131n ne olaca\u011f\u0131n\u0131 tan\u0131mlayan bir dizi kurald\u0131r. Basit\u00e7e ifade etmek gerekirse, profil’ler veritaban\u0131 y\u00f6neticilerine (DBA’lere), kullan\u0131c\u0131lar\u0131n sistem kaynaklar\u0131n\u0131 a\u015f\u0131r\u0131 t\u00fcketmesini engelleme ve g\u00fc\u00e7l\u00fc parola politikalar\u0131 uygulamalar\u0131n\u0131 zorunlu k\u0131lma imkan\u0131 tan\u0131r. Bu sayede, belirli bir kullan\u0131c\u0131n\u0131n veya uygulama kullan\u0131c\u0131s\u0131n\u0131n i\u015flemci (CPU) s\u00fcresini, oturum s\u00fcresini, mant\u0131ksal okuma say\u0131s\u0131n\u0131 veya fiziksel okuma say\u0131s\u0131n\u0131 s\u0131n\u0131rlayabilirsiniz. Ayr\u0131ca, parola karma\u015f\u0131kl\u0131\u011f\u0131, parola ya\u015fam s\u00fcresi, ba\u015far\u0131s\u0131z oturum a\u00e7ma denemesi limitleri gibi g\u00fcvenlik ayarlar\u0131n\u0131 da profil’ler arac\u0131l\u0131\u011f\u0131yla merkezi olarak y\u00f6netebilirsiniz. Bu, sadece veritaban\u0131 g\u00fcvenli\u011fini art\u0131rmakla kalmaz, ayn\u0131 zamanda potansiyel performans sorunlar\u0131n\u0131 da engeller.<\/p>\n
Neden bu kadar \u00f6nemli olduklar\u0131n\u0131 daha iyi anlamak i\u00e7in bir senaryo d\u00fc\u015f\u00fcnelim: Bir e-ticaret uygulamas\u0131nda, binlerce kullan\u0131c\u0131n\u0131n ayn\u0131 anda veritaban\u0131na ba\u011fland\u0131\u011f\u0131n\u0131 varsayal\u0131m. E\u011fer bu kullan\u0131c\u0131lardan biri veya bir grup, yanl\u0131\u015fl\u0131kla veya k\u00f6t\u00fc niyetli olarak \u00e7ok kaynak t\u00fcketen bir sorgu \u00e7al\u0131\u015ft\u0131r\u0131rsa ne olur? Veritaban\u0131 yava\u015flayabilir, hatta tamamen kilitlenebilir. Bu durum, di\u011fer me\u015fru kullan\u0131c\u0131lar\u0131n uygulamaya eri\u015fememesine ve ciddi i\u015f kayb\u0131na yol a\u00e7abilir. \u0130\u015fte bu noktada profil’ler devreye girer. Kullan\u0131c\u0131lara atanacak profil’ler sayesinde, her bir kullan\u0131c\u0131n\u0131n maksimum CPU s\u00fcresi veya e\u015f zamanl\u0131 oturum say\u0131s\u0131 gibi limitler belirleyebiliriz. B\u00f6ylece, bir kullan\u0131c\u0131 belirlenen limiti a\u015ft\u0131\u011f\u0131nda, Oracle otomatik olarak o kullan\u0131c\u0131n\u0131n oturumunu sonland\u0131r\u0131r veya sonraki i\u015flemlerini engeller, b\u00f6ylece sistemin genel stabilitesi korunmu\u015f olur.<\/p>\n
Profil’ler sadece performans y\u00f6netimi i\u00e7in de\u011fil, ayn\u0131 zamanda g\u00fcvenlik uyumlulu\u011fu i\u00e7in de vazge\u00e7ilmezdir. Finans veya sa\u011fl\u0131k sekt\u00f6rlerindeki \u015firketler, genellikle s\u0131k\u0131 reg\u00fclasyonlara tabidir ve kullan\u0131c\u0131 parolalar\u0131 i\u00e7in belirli karma\u015f\u0131kl\u0131k, ya\u015fland\u0131rma ve kilitleme politikalar\u0131n\u0131 uygulamak zorundad\u0131r. Oracle profil’leri, bu t\u00fcr kurumsal g\u00fcvenlik standartlar\u0131n\u0131 otomatik olarak uygulaman\u0131n ve denetlemenin en etkili yolunu sunar. \u00d6rne\u011fin, bir profil tan\u0131mlayarak t\u00fcm kullan\u0131c\u0131lar\u0131n en az 8 karakterli, b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf, say\u0131 ve \u00f6zel karakter i\u00e7eren parolalar kullanmas\u0131n\u0131, parolalar\u0131n\u0131 90 g\u00fcnde bir de\u011fi\u015ftirmesini ve 3 ba\u015far\u0131s\u0131z denemeden sonra hesaplar\u0131n\u0131n kilitlenmesini zorunlu k\u0131labilirsiniz. Bu esneklik ve kontrol, modern veritaban\u0131 y\u00f6netiminin temel ta\u015flar\u0131ndan biridir.<\/p>\n
DEFAULT<\/code> profile sahiptir. Bu profili kendi g\u00fcvenlik ve kaynak ihtiya\u00e7lar\u0131n\u0131za g\u00f6re \u00f6zelle\u015ftirmek, yeni kullan\u0131c\u0131lar i\u00e7in temel bir g\u00fcvenlik katman\u0131 olu\u015fturman\u0131n en h\u0131zl\u0131 yoludur. Ancak daha spesifik ihtiya\u00e7lar i\u00e7in \u00f6zel profiller olu\u015fturmak daha iyi bir yakla\u015f\u0131md\u0131r.\n<\/div>\nSonu\u00e7 olarak, Oracle profil’leri, veritaban\u0131 y\u00f6neticilerine hem kaynak y\u00f6netimi hem de g\u00fcvenlik politikalar\u0131 konusunda g\u00fc\u00e7l\u00fc bir kontrol mekanizmas\u0131 sunar. Bu ara\u00e7 sayesinde, veritaban\u0131 ortam\u0131n\u0131z daha g\u00fcvenli, daha kararl\u0131 ve daha y\u00f6netilebilir hale gelir. Kullan\u0131c\u0131 deneyimini optimize ederken, ayn\u0131 zamanda olas\u0131 tehditlere kar\u015f\u0131 da proaktif bir savunma hatt\u0131 olu\u015fturmu\u015f olursunuz. Bu temel anlay\u0131\u015fla, \u015fimdi profil’lerin nas\u0131l olu\u015fturulup y\u00f6netildi\u011fini inceleyelim.<\/p>\n
\nOracle Veritaban\u0131 Profili Nas\u0131l Olu\u015fturulur ve Kaynak Limitleri Nas\u0131l Belirlenir?<\/h2>\n
Bir Oracle profil’i olu\u015fturmak ve ona \u00f6zel kaynak limitleri atamak, veritaban\u0131 y\u00f6netiminin en kritik ad\u0131mlar\u0131ndan biridir. Bu s\u00fcre\u00e7, kullan\u0131c\u0131lar\u0131n\u0131z\u0131n sisteme getirece\u011fi y\u00fck\u00fc kontrol alt\u0131nda tutarak veritaban\u0131n\u0131z\u0131n performans\u0131n\u0131 ve stabilitesini do\u011frudan etkiler. Ad\u0131m ad\u0131m bu s\u00fcreci inceleyelim ve \u00f6rneklerle peki\u015ftirelim. Profil olu\u015fturma, CREATE PROFILE<\/code> SQL komutu ile yap\u0131l\u0131r ve \u00e7e\u015fitli kaynak parametrelerini i\u00e7erir.<\/p>\n\u00d6ncelikle, profil’in ne t\u00fcr kaynaklar\u0131 s\u0131n\u0131rlayabilece\u011fini anlamak \u00f6nemlidir. Oracle, oturum bazl\u0131 (SESSIONS_PER_USER<\/code>, CONNECT_TIME<\/code>, IDLE_TIME<\/code>) ve \u00e7a\u011fr\u0131 bazl\u0131 (CPU_PER_CALL<\/code>, LOGICAL_READS_PER_CALL<\/code>) olmak \u00fczere iki ana kategoriye ayr\u0131lan kaynak limitleri sunar. Ayr\u0131ca, bir oturumun toplam s\u00fcresi (CPU_PER_SESSION<\/code>, LOGICAL_READS_PER_SESSION<\/code>) ve fiziksel okuma limitleri de (PRIVATE_SGA<\/code>, FAILED_LOGIN_ATTEMPTS<\/code>, vb.) tan\u0131mlanabilir. Bu parametrelerin her biri, veritaban\u0131 kaynaklar\u0131n\u0131n daha verimli kullan\u0131lmas\u0131n\u0131 sa\u011flamak i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/p>\nAd\u0131m 1: Yeni Bir Profil Olu\u015fturma<\/h3>\n
Yeni bir profil olu\u015fturmak i\u00e7in CREATE PROFILE<\/code> komutunu kullan\u0131r\u0131z. \u00d6rne\u011fin, “GEL\u0130\u015eT\u0130R\u0130C\u0130_PROF\u0130L” ad\u0131nda bir profil olu\u015ftural\u0131m ve bu profil i\u00e7in ba\u015flang\u0131\u00e7ta baz\u0131 temel limitler belirleyelim:<\/p>\n\nCREATE PROFILE GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L LIMIT\n SESSIONS_PER_USER 3 -- Her kullan\u0131c\u0131n\u0131n ayn\u0131 anda a\u00e7abilece\u011fi maksimum oturum say\u0131s\u0131\n CPU_PER_SESSION UNLIMITED -- Her oturum i\u00e7in toplam CPU s\u00fcresi (milisaniye cinsinden)\n CONNECT_TIME 60 -- Oturumun ba\u011flanabilece\u011fi maksimum s\u00fcre (dakika cinsinden)\n IDLE_TIME 30 -- Oturumun aktif olmadan kalabilece\u011fi maksimum s\u00fcre (dakika cinsinden)\n LOGICAL_READS_PER_SESSION 20000; -- Her oturum i\u00e7in maksimum mant\u0131ksal okuma say\u0131s\u0131\n<\/pre>\n<\/code><\/p>\n
Yukar\u0131daki \u00f6rnekte:<\/p>\n
\nSESSIONS_PER_USER 3<\/code>: Bir geli\u015ftiricinin ayn\u0131 anda sadece 3 oturum a\u00e7mas\u0131na izin verir. Bu, gereksiz kaynak t\u00fcketimini \u00f6nler.<\/li>\nCPU_PER_SESSION UNLIMITED<\/code>: Geli\u015ftiricilerin bazen uzun s\u00fcren i\u015flemleri olabilece\u011fi i\u00e7in CPU s\u00fcresini s\u0131n\u0131rs\u0131z b\u0131rak\u0131yoruz. Ancak bir \u00fcretim ortam\u0131nda bu de\u011fer s\u0131n\u0131rlanabilir.<\/li>\nCONNECT_TIME 60<\/code>: Bir oturumun en fazla 60 dakika (1 saat) aktif kalabilece\u011fini belirtir. Bu, unutulan veya ask\u0131da kalan oturumlar\u0131n kaynaklar\u0131 bo\u015funa t\u00fcketmesini engeller.<\/li>\nIDLE_TIME 30<\/code>: Bir oturumun 30 dakika boyunca hi\u00e7bir i\u015flem yapmamas\u0131 durumunda otomatik olarak sonland\u0131r\u0131lmas\u0131n\u0131 sa\u011flar. Bu da bo\u015fta duran oturumlar\u0131n kaynaklar\u0131 me\u015fgul etmesini engeller.<\/li>\nLOGICAL_READS_PER_SESSION 20000<\/code>: Bir oturumun yapabilece\u011fi maksimum mant\u0131ksal okuma say\u0131s\u0131n\u0131 20.000 olarak s\u0131n\u0131rlar. \u00c7ok b\u00fcy\u00fck sorgular\u0131n veritaban\u0131n\u0131 yormas\u0131n\u0131 \u00f6nlemek i\u00e7in \u00f6nemlidir.<\/li>\n<\/ul>\nAd\u0131m 2: Olu\u015fturulan Profili Bir Kullan\u0131c\u0131ya Atama<\/h3>\n
Profil olu\u015fturulduktan sonra, bu profili bir veya daha fazla kullan\u0131c\u0131ya ataman\u0131z gerekir. Bu i\u015flem, ALTER USER<\/code> komutu ile yap\u0131l\u0131r:<\/p>\n\nALTER USER developer_user_01 PROFILE GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L;\nALTER USER developer_user_02 PROFILE GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L;\n<\/pre>\n<\/code><\/p>\n
Bu komutlarla, developer_user_01<\/code> ve developer_user_02<\/code> ad\u0131ndaki kullan\u0131c\u0131lar art\u0131k GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L<\/code>'in belirledi\u011fi kurallara tabi olacaklard\u0131r. Bir kullan\u0131c\u0131ya profil atand\u0131ktan sonra, bu limitler yeni oturumlar\u0131 i\u00e7in ge\u00e7erli olmaya ba\u015flar. Mevcut oturumlar genellikle etkilenmez.<\/p>\nAd\u0131m 3: Mevcut Bir Profili De\u011fi\u015ftirme<\/h3>\n
Zamanla, profil'deki limitleri de\u011fi\u015ftirmeniz gerekebilir. Bu, ALTER PROFILE<\/code> komutu ile kolayca yap\u0131labilir:<\/p>\n\nALTER PROFILE GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L LIMIT\n SESSIONS_PER_USER 5; -- Oturum limitini 3'ten 5'e \u00e7\u0131kar\u0131yoruz\n<\/pre>\n<\/code><\/p>\n
Bu de\u011fi\u015fiklik, profili kullanan t\u00fcm kullan\u0131c\u0131lar i\u00e7in hemen ge\u00e7erli olur, ancak genellikle yeni oturumlar \u00fczerinde etkili olur. Devam eden oturumlar i\u00e7in, de\u011fi\u015fiklikler oturum kapat\u0131l\u0131p tekrar a\u00e7\u0131ld\u0131\u011f\u0131nda devreye girer.<\/p>\n
Vaka Analizi: E-Ticaret Platformunda Performans Optimizasyonu<\/h3>\n
B\u00fcy\u00fck bir e-ticaret \u015firketi, yo\u011fun kampanya d\u00f6nemlerinde veritaban\u0131n\u0131n yava\u015flamas\u0131ndan \u015fikayet\u00e7iydi. Analizler, baz\u0131 raporlama ara\u00e7lar\u0131n\u0131n veya geli\u015ftiricilerin yanl\u0131\u015fl\u0131kla \u00e7al\u0131\u015ft\u0131rd\u0131\u011f\u0131 optimize edilmemi\u015f sorgular\u0131n \u00e7ok fazla kaynak t\u00fcketti\u011fini g\u00f6sterdi. \u015eirket, bu sorunu \u00e7\u00f6zmek i\u00e7in Oracle profil'lerini kullanmaya karar verdi.<\/p>\n
DBA ekibi, iki yeni profil olu\u015fturdu:<\/p>\n
\n- RAPORLAMA_KULLANICI_PROF\u0130L\u0130:<\/strong> Bu profil, belirli raporlama kullan\u0131c\u0131lar\u0131 i\u00e7in
LOGICAL_READS_PER_SESSION<\/code> limitini 50.000 ile s\u0131n\u0131rlad\u0131 ve CONNECT_TIME<\/code> s\u00fcresini 120 dakikaya uzatt\u0131. Bu sayede, uzun rapor sorgular\u0131 \u00e7al\u0131\u015fabilirken, a\u015f\u0131r\u0131 kaynak t\u00fcketimi engellendi.<\/li>\n- GEL\u0130ST\u0130R\u0130C\u0130_TEST_PROF\u0130L\u0130:<\/strong> Geli\u015ftiricilerin test ortamlar\u0131nda daha agresif sorgular \u00e7al\u0131\u015ft\u0131rmalar\u0131na izin vermek i\u00e7in
CPU_PER_SESSION<\/code> ve LOGICAL_READS_PER_SESSION<\/code> limitlerini y\u00fckseltti, ancak IDLE_TIME<\/code>'\u0131 15 dakika olarak ayarlad\u0131. B\u00f6ylece, test s\u0131ras\u0131nda unutulan oturumlar h\u0131zla temizlendi.<\/li>\n<\/ol>\nBu profil atamalar\u0131 sayesinde, e-ticaret platformu yo\u011fun d\u00f6nemlerde bile \u00e7ok daha stabil ve performansl\u0131 \u00e7al\u0131\u015fmaya ba\u015flad\u0131. A\u015f\u0131r\u0131 kaynak t\u00fcketen sorgular otomatik olarak sonland\u0131r\u0131larak sistemin genel sa\u011fl\u0131\u011f\u0131 korundu ve kullan\u0131c\u0131 deneyimi \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015fti.<\/p>\n
Oracle profil'leri, veritaban\u0131 y\u00f6neticilerine bu t\u00fcr senaryolarda proaktif bir kontrol sa\u011flaman\u0131n anahtar\u0131d\u0131r. Kaynak limitlerini dikkatlice belirlemek ve ihtiya\u00e7lara g\u00f6re ayarlamak, modern veritaban\u0131 y\u00f6netiminin ayr\u0131lmaz bir par\u00e7as\u0131d\u0131r.<\/p>\n
\nParola Politikalar\u0131n\u0131 Profillerle G\u00fc\u00e7lendirme: Veritaban\u0131 G\u00fcvenli\u011finin Temel Ta\u015f\u0131<\/h2>\n
Veritaban\u0131 g\u00fcvenli\u011fi, her organizasyon i\u00e7in en \u00f6ncelikli konulardan biridir ve bu g\u00fcvenli\u011fin temelini g\u00fc\u00e7l\u00fc parola politikalar\u0131 olu\u015fturur. Oracle profil'leri, parolalar\u0131n ne kadar g\u00fc\u00e7l\u00fc olmas\u0131 gerekti\u011fini, ne s\u0131kl\u0131kla de\u011fi\u015ftirilmesi gerekti\u011fini ve ba\u015far\u0131s\u0131z oturum a\u00e7ma denemeleri durumunda ne olaca\u011f\u0131n\u0131 belirleyen kapsaml\u0131 g\u00fcvenlik ayarlar\u0131 sunar. Bu b\u00f6l\u00fcm, parola politikalar\u0131n\u0131 profillerle nas\u0131l uygulayaca\u011f\u0131n\u0131z\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi nas\u0131l art\u0131raca\u011f\u0131n\u0131z\u0131 detayland\u0131racakt\u0131r.<\/p>\n
Parola Politikas\u0131 Parametreleri Nelerdir?<\/h3>\n
Oracle profil'leri, a\u015fa\u011f\u0131daki ana parola politikas\u0131 parametrelerini i\u00e7erir:<\/p>\n
\nPASSWORD_LIFE_TIME<\/code>: Bir parolan\u0131n ne kadar s\u00fcre ge\u00e7erli kalaca\u011f\u0131n\u0131 belirler (g\u00fcn cinsinden). Bu s\u00fcre sonunda kullan\u0131c\u0131dan parolas\u0131n\u0131 de\u011fi\u015ftirmesi istenir.<\/li>\nPASSWORD_GRACE_TIME<\/code>: Parolan\u0131n s\u00fcresi dolduktan sonra, kullan\u0131c\u0131n\u0131n parolas\u0131n\u0131 de\u011fi\u015ftirmesi i\u00e7in verilen ek s\u00fcredir (g\u00fcn cinsinden). Bu s\u00fcre i\u00e7inde kullan\u0131c\u0131 giri\u015f yapabilir ancak parolas\u0131n\u0131 de\u011fi\u015ftirmesi gerekti\u011fi uyar\u0131l\u0131r.<\/li>\nPASSWORD_REUSE_TIME<\/code> \/ PASSWORD_REUSE_MAX<\/code>: Parolan\u0131n ne kadar s\u00fcre sonra (g\u00fcn cinsinden) veya ka\u00e7 farkl\u0131 parola kulland\u0131ktan sonra tekrar kullan\u0131labilece\u011fini belirler. Bu, kullan\u0131c\u0131lar\u0131n ayn\u0131 parolay\u0131 s\u00fcrekli kullanmas\u0131n\u0131 engeller.<\/li>\nPASSWORD_VERIFY_FUNCTION<\/code>: Parolan\u0131n karma\u015f\u0131kl\u0131k kurallar\u0131n\u0131 (uzunluk, b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf, say\u0131, \u00f6zel karakter i\u00e7ermesi) kontrol eden bir PL\/SQL fonksiyonunu belirtir.<\/li>\nFAILED_LOGIN_ATTEMPTS<\/code>: Bir kullan\u0131c\u0131n\u0131n hesab\u0131 kilitlenmeden \u00f6nce yapabilece\u011fi ba\u015far\u0131s\u0131z oturum a\u00e7ma denemesi say\u0131s\u0131.<\/li>\nPASSWORD_LOCK_TIME<\/code>: Bir kullan\u0131c\u0131n\u0131n hesab\u0131 ba\u015far\u0131s\u0131z denemeler sonucu kilitlendi\u011finde, hesab\u0131n ne kadar s\u00fcre kilitli kalaca\u011f\u0131n\u0131 belirler (g\u00fcn cinsinden).<\/li>\n<\/ul>\nAd\u0131m 1: G\u00fc\u00e7l\u00fc Bir Parola Politikas\u0131 Tan\u0131mlayan Profil Olu\u015fturma veya De\u011fi\u015ftirme<\/h3>\n
\u015eimdi, bu parametreleri kullanarak \"\u00dcRET\u0130M_KULLANICI_PROF\u0130L\u0130\" ad\u0131nda, g\u00fc\u00e7l\u00fc parola politikalar\u0131 i\u00e7eren bir profil olu\u015ftural\u0131m:<\/p>\n
\nCREATE PROFILE \u00dcRET\u0130M_KULLANICI_PROF\u0130L\u0130 LIMIT\n SESSIONS_PER_USER 2\n CPU_PER_SESSION 120000 -- 2 dakika CPU s\u00fcresi\n CONNECT_TIME 30 -- 30 dakika ba\u011flant\u0131 s\u00fcresi\n IDLE_TIME 10 -- 10 dakika bo\u015fta kalma s\u00fcresi\n FAILED_LOGIN_ATTEMPTS 3 -- 3 ba\u015far\u0131s\u0131z denemeden sonra hesap kilitlensin\n PASSWORD_LOCK_TIME 1\/24 -- Hesap 1 saat (1\/24 g\u00fcn) kilitli kals\u0131n\n PASSWORD_LIFE_TIME 90 -- Parola 90 g\u00fcn ge\u00e7erli olsun\n PASSWORD_GRACE_TIME 7 -- 7 g\u00fcnl\u00fck ek s\u00fcre tan\u0131ns\u0131n\n PASSWORD_REUSE_TIME 365 -- Parola 365 g\u00fcn sonra yeniden kullan\u0131labilir\n PASSWORD_VERIFY_FUNCTION ORA12C_VERIFY_FUNCTION; -- Oracle 12c'nin varsay\u0131lan karma\u015f\u0131kl\u0131k fonksiyonu\n<\/pre>\n<\/code><\/p>\n
Yukar\u0131daki \u00f6rnekte:<\/p>\n
\nFAILED_LOGIN_ATTEMPTS 3<\/code>: Bir kullan\u0131c\u0131 \u00fc\u00e7 kez yanl\u0131\u015f parola girdi\u011finde hesab\u0131 kilitlenecektir. Bu, kaba kuvvet sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur.<\/li>\nPASSWORD_LOCK_TIME 1\/24<\/code>: Hesap kilitlendi\u011finde, 1 saat boyunca kapal\u0131 kal\u0131r. Bu s\u00fcre, otomatik denemeleri cayd\u0131r\u0131r.<\/li>\nPASSWORD_LIFE_TIME 90<\/code>: Kullan\u0131c\u0131lar\u0131n parolalar\u0131n\u0131 her 90 g\u00fcnde bir de\u011fi\u015ftirmesini zorunlu k\u0131lar. Bu, parolalar\u0131n eskimesini ve ele ge\u00e7irilme riskini azalt\u0131r.<\/li>\nPASSWORD_REUSE_TIME 365<\/code>: Ayn\u0131 parolan\u0131n bir y\u0131l i\u00e7inde tekrar kullan\u0131lmas\u0131n\u0131 engeller. Bu, kullan\u0131c\u0131lar\u0131n s\u00fcrekli ayn\u0131 parolalar\u0131 d\u00f6nd\u00fcrmesini \u00f6nler.<\/li>\nPASSWORD_VERIFY_FUNCTION ORA12C_VERIFY_FUNCTION<\/code>: Oracle 12c'den itibaren gelen bu fonksiyon, parolalar\u0131n belirli uzunlukta olmas\u0131n\u0131, b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf, say\u0131 ve \u00f6zel karakter i\u00e7ermesini zorunlu k\u0131lar. Kendi \u00f6zel parola do\u011frulama fonksiyonlar\u0131n\u0131z\u0131 da yazabilirsiniz.<\/li>\n<\/ul>\nAd\u0131m 2: Profili Kullan\u0131c\u0131ya Atama ve Kontrol Etme<\/h3>\n
Profili bir kullan\u0131c\u0131ya atamak i\u00e7in yine ALTER USER<\/code> komutunu kullan\u0131r\u0131z:<\/p>\n\nALTER USER production_app_user PROFILE \u00dcRET\u0130M_KULLANICI_PROF\u0130L\u0130;\n<\/pre>\n<\/code><\/p>\n
Bu kullan\u0131c\u0131 art\u0131k belirlenen parola politikalar\u0131na uymak zorunda kalacakt\u0131r. Kullan\u0131c\u0131 yeni bir parola belirlerken veya mevcut parolas\u0131n\u0131 de\u011fi\u015ftirirken bu kurallar ge\u00e7erli olacakt\u0131r.<\/p>\n
Atanan profili kontrol etmek i\u00e7in a\u015fa\u011f\u0131daki sorguyu kullanabilirsiniz:<\/p>\n
\nSELECT USERNAME, PROFILE FROM DBA_USERS WHERE USERNAME = 'PRODUCTION_APP_USER';\n<\/pre>\n<\/code><\/p>\n
Vaka Analizi: Finans Kurumunda Reg\u00fclatif Uyumluluk<\/h3>\n
B\u00fcy\u00fck bir finans kurumu, yeni bir reg\u00fclasyonun getirdi\u011fi gereklilikler do\u011frultusunda, kullan\u0131c\u0131 parolalar\u0131 i\u00e7in \u00e7ok daha s\u0131k\u0131 kurallar uygulamak zorunda kald\u0131. Mevcut sistemdeki parolalar kolayca tahmin edilebilir ve uzun s\u00fcreler boyunca de\u011fi\u015ftirilmiyordu. Bu durum, veri s\u0131z\u0131nt\u0131s\u0131 riskini art\u0131r\u0131yordu.<\/p>\n
DBA ekibi, Oracle profil'lerini kullanarak bu sorunu \u00e7\u00f6zd\u00fc:<\/p>\n
\n- YEN\u0130_F\u0130NANS_PROF\u0130L\u0130<\/strong> ad\u0131nda yeni bir profil olu\u015fturuldu.<\/li>\n
- Bu profile
PASSWORD_LIFE_TIME 60<\/code> (60 g\u00fcnde bir parola de\u011fi\u015fikli\u011fi), FAILED_LOGIN_ATTEMPTS 5<\/code> (5 ba\u015far\u0131s\u0131z deneme), PASSWORD_LOCK_TIME 0.00347<\/code> (5 dakika kilitleme) ve \u00f6zel bir PASSWORD_VERIFY_FUNCTION<\/code> atand\u0131. Bu \u00f6zel fonksiyon, parolan\u0131n en az 12 karakter olmas\u0131n\u0131, d\u00f6rt farkl\u0131 karakter grubundan (b\u00fcy\u00fck harf, k\u00fc\u00e7\u00fck harf, say\u0131, \u00f6zel karakter) en az \u00fc\u00e7\u00fcn\u00fc i\u00e7ermesini ve kullan\u0131c\u0131 ad\u0131n\u0131 veya ters \u00e7evrilmi\u015f kullan\u0131c\u0131 ad\u0131n\u0131 i\u00e7ermemesini sa\u011fl\u0131yordu.<\/li>\n- Mevcut t\u00fcm kullan\u0131c\u0131lara ve gelecekte olu\u015fturulacak kritik finans kullan\u0131c\u0131lar\u0131na bu profil atand\u0131.<\/li>\n<\/ol>\n
Bu sayede, kurum hem reg\u00fclasyonlara tam uyum sa\u011flad\u0131 hem de kullan\u0131c\u0131 hesaplar\u0131n\u0131n g\u00fcvenli\u011fini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rarak potansiyel g\u00fcvenlik risklerini minimize etti. Kullan\u0131c\u0131lar ilk ba\u015fta yeni parola kurallar\u0131na al\u0131\u015fmakta zorlansa da, sistemin sa\u011flad\u0131\u011f\u0131 g\u00fcvenlik faydalar\u0131 bu k\u00fc\u00e7\u00fck rahats\u0131zl\u0131\u011f\u0131n \u00f6n\u00fcne ge\u00e7ti.<\/p>\n
\n Uzman \u0130pucu: Kendi \u00f6zel parola do\u011frulama fonksiyonunuzu (PASSWORD_VERIFY_FUNCTION<\/code>) yazarken, karma\u015f\u0131kl\u0131\u011f\u0131 art\u0131r\u0131c\u0131 ancak kullan\u0131c\u0131lar i\u00e7in hat\u0131rlanmas\u0131 imkans\u0131z olmayan kurallar belirlemeye \u00f6zen g\u00f6sterin. A\u015f\u0131r\u0131 karma\u015f\u0131k kurallar, kullan\u0131c\u0131lar\u0131n parolalar\u0131n\u0131 bir yere yazmas\u0131na veya basit d\u00f6ng\u00fclerle de\u011fi\u015ftirmesine yol a\u00e7abilir.\n<\/div>\nParola politikalar\u0131n\u0131n profiller arac\u0131l\u0131\u011f\u0131yla y\u00f6netilmesi, veritaban\u0131 g\u00fcvenli\u011finin sadece bir par\u00e7as\u0131d\u0131r ancak en temel ve etkili olanlardan biridir. Bu sayede, yetkisiz eri\u015fim denemeleri engellenir ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc daha iyi korunur.<\/p>\n
\n\u0130leri D\u00fczey Profil Y\u00f6netimi: Varsay\u0131lan Profillerden G\u00fcvenlik Denetimine<\/h2>\n
Oracle profilleri, temel kaynak ve parola y\u00f6netiminden \u00e7ok daha fazlas\u0131n\u0131 sunar. Deneyimli DBA'ler i\u00e7in, profilleri daha sofistike g\u00fcvenlik ve performans stratejilerinin bir par\u00e7as\u0131 olarak kullanma f\u0131rsatlar\u0131 vard\u0131r. Bu b\u00f6l\u00fcmde, ileri d\u00fczey profil y\u00f6netim tekniklerine, varsay\u0131lan profilin \u00f6nemine ve g\u00fcvenlik denetimi entegrasyonuna de\u011finece\u011fiz.<\/p>\n
DEFAULT<\/code> Profil: Her Kullan\u0131c\u0131n\u0131n Ba\u015flang\u0131\u00e7 Noktas\u0131<\/h3>\nHer Oracle veritaban\u0131nda, DEFAULT<\/code> ad\u0131nda \u00f6zel bir profil bulunur. Yeni olu\u015fturulan bir kullan\u0131c\u0131ya \u00f6zel bir profil atanmad\u0131\u011f\u0131nda, otomatik olarak DEFAULT<\/code> profil atan\u0131r. Bu, DEFAULT<\/code> profilin veritaban\u0131n\u0131zdaki t\u00fcm kullan\u0131c\u0131lar i\u00e7in bir g\u00fcvenlik ve kaynak y\u00f6netimi taban\u0131 g\u00f6revi g\u00f6rd\u00fc\u011f\u00fc anlam\u0131na gelir. E\u011fer bu profilin ayarlar\u0131 yeterince g\u00fc\u00e7l\u00fc de\u011filse, veritaban\u0131n\u0131z savunmas\u0131z kalabilir.<\/p>\nDEFAULT<\/code> profili de\u011fi\u015ftirmek, veritaban\u0131 genelinde an\u0131nda etkili olan kapsaml\u0131 de\u011fi\u015fiklikler yapman\u0131n g\u00fc\u00e7l\u00fc bir yoludur. \u00d6rne\u011fin, t\u00fcm kullan\u0131c\u0131lar\u0131n parola \u00f6mr\u00fcn\u00fc 90 g\u00fcn ile s\u0131n\u0131rlamak veya ba\u015far\u0131s\u0131z giri\u015f denemesi limitini 5'e d\u00fc\u015f\u00fcrmek i\u00e7in DEFAULT<\/code> profili de\u011fi\u015ftirebilirsiniz:<\/p>\n\nALTER PROFILE DEFAULT LIMIT\n PASSWORD_LIFE_TIME 90\n FAILED_LOGIN_ATTEMPTS 5\n PASSWORD_LOCK_TIME 1; -- Hesap 1 g\u00fcn kilitli kals\u0131n\n<\/pre>\n<\/code><\/p>\n
Bu t\u00fcr de\u011fi\u015fiklikler, veritaban\u0131n\u0131zdaki t\u00fcm kullan\u0131c\u0131lar\u0131 etkileyece\u011fi i\u00e7in dikkatli yap\u0131lmal\u0131d\u0131r. Her zaman \u00f6nce test ortam\u0131nda denemeniz ve etkilerini analiz etmeniz \u00f6nerilir.<\/p>\n
Profili Kald\u0131rma ve Etkileri<\/h3>\n
Bir profili kald\u0131rmak, DROP PROFILE<\/code> komutu ile yap\u0131l\u0131r. Ancak, bir profili kald\u0131rmadan \u00f6nce, bu profili kullanan hi\u00e7bir kullan\u0131c\u0131n\u0131n olmad\u0131\u011f\u0131ndan emin olmal\u0131s\u0131n\u0131z. E\u011fer bir profili kullanan kullan\u0131c\u0131lar varsa, Oracle size profili \"CASCADE\" se\u00e7ene\u011fi ile b\u0131rakman\u0131z\u0131 isteyecektir:<\/p>\n\nDROP PROFILE ESK\u0130_PROF\u0130L; -- Hata verebilir e\u011fer kullanan kullan\u0131c\u0131 varsa\nDROP PROFILE ESK\u0130_PROF\u0130L CASCADE; -- Profili kullanan kullan\u0131c\u0131lar\u0131 DEFAULT profile atar\n<\/pre>\n<\/code><\/p>\n
CASCADE<\/code> anahtar kelimesi kullan\u0131ld\u0131\u011f\u0131nda, kald\u0131r\u0131lan profili kullanan t\u00fcm kullan\u0131c\u0131lar otomatik olarak DEFAULT<\/code> profile atan\u0131r. Bu \u00f6nemli bir detayd\u0131r, \u00e7\u00fcnk\u00fc DEFAULT<\/code> profilin ayarlar\u0131, kald\u0131rd\u0131\u011f\u0131n\u0131z profilin ayarlar\u0131ndan \u00e7ok farkl\u0131 olabilir ve bu durum g\u00fcvenlik veya performans a\u00e7\u0131klar\u0131na neden olabilir. Bu nedenle, bir profili kald\u0131rmadan \u00f6nce, etkilenen kullan\u0131c\u0131lar\u0131n yeni atanacak DEFAULT<\/code> profil ayarlar\u0131n\u0131 kar\u015f\u0131lad\u0131\u011f\u0131ndan ve bu ayarlardan olumsuz etkilenmeyece\u011finden emin olmal\u0131s\u0131n\u0131z.<\/p>\nProfil Kullan\u0131m\u0131n\u0131 \u0130zleme ve Denetleme<\/h3>\n
Profillerin etkinli\u011fini s\u00fcrekli izlemek, veritaban\u0131 g\u00fcvenli\u011finiz ve performans\u0131n\u0131z i\u00e7in hayati \u00f6neme sahiptir. Hangi kullan\u0131c\u0131lar\u0131n hangi profillere atand\u0131\u011f\u0131n\u0131 ve bu profillerin hangi kaynak limitlerini i\u00e7erdi\u011fini d\u00fczenli olarak kontrol etmelisiniz. A\u015fa\u011f\u0131daki sorgular bu konuda size yard\u0131mc\u0131 olabilir:<\/p>\n
\n-- Hangi kullan\u0131c\u0131n\u0131n hangi profile atand\u0131\u011f\u0131n\u0131 g\u00f6rmek i\u00e7in:\nSELECT USERNAME, PROFILE FROM DBA_USERS;\n\n-- Bir profilin i\u00e7erdi\u011fi t\u00fcm limitleri g\u00f6rmek i\u00e7in:\nSELECT * FROM DBA_PROFILES WHERE PROFILE = 'GEL\u0130ST\u0130R\u0130C\u0130_PROF\u0130L' ORDER BY RESOURCE_NAME;\n<\/pre>\n<\/code><\/p>\n
Ek olarak, veritaban\u0131 denetimini profillerle entegre ederek, profil limitlerini a\u015fan veya parola politikalar\u0131na uymayan kullan\u0131c\u0131 giri\u015fimlerini loglayabilirsiniz. \u00d6rne\u011fin, AUDIT<\/code> komutunu kullanarak ba\u015far\u0131s\u0131z oturum a\u00e7ma denemelerini veya belirli bir kaynak limiti a\u015f\u0131m\u0131n\u0131 denetleyebilirsiniz. Bu denetim kay\u0131tlar\u0131, olas\u0131 g\u00fcvenlik tehditlerini ve performans sorunlar\u0131n\u0131 erken tespit etmenizi sa\u011flar.<\/p>\nGer\u00e7ek D\u00fcnya Senaryosu: Birden Fazla Departman i\u00e7in \u00d6zelle\u015ftirilmi\u015f Profiller<\/h3>\n
B\u00fcy\u00fck bir kurumsal \u015firketin muhasebe, sat\u0131\u015f ve insan kaynaklar\u0131 gibi farkl\u0131 departmanlar\u0131 bulunmaktad\u0131r. Her departman\u0131n veritaban\u0131 kullan\u0131m\u0131 ve g\u00fcvenlik gereksinimleri farkl\u0131d\u0131r:<\/p>\n
\n- Muhasebe Departman\u0131:<\/strong> Hassas finansal verilere eri\u015fir. Y\u00fcksek g\u00fcvenlik gerektirir (\u00e7ok s\u0131k parola de\u011fi\u015fikli\u011fi, uzun parola karma\u015f\u0131kl\u0131\u011f\u0131, \u00e7ok d\u00fc\u015f\u00fck ba\u015far\u0131s\u0131z giri\u015f denemesi limiti). Kaynak t\u00fcketimi genellikle raporlama odakl\u0131 oldu\u011fu i\u00e7in y\u00fcksek
LOGICAL_READS_PER_SESSION<\/code>, ancak d\u00fc\u015f\u00fck CONNECT_TIME<\/code> ve IDLE_TIME<\/code> limitleri.<\/li>\n- Sat\u0131\u015f Departman\u0131:<\/strong> Genellikle CRM uygulamalar\u0131 \u00fczerinden h\u0131zl\u0131 ve k\u0131sa i\u015flemler yapar. Daha esnek parola politikalar\u0131, ancak y\u00fcksek
SESSIONS_PER_USER<\/code> limitleri (sahada \u00e7al\u0131\u015fanlar i\u00e7in birden fazla cihazdan eri\u015fim). Kaynak t\u00fcketimi genellikle d\u00fc\u015f\u00fck.<\/li>\n- \u0130nsan Kaynaklar\u0131 Departman\u0131:<\/strong> Y\u00fcksek gizlilik gerektiren verilere eri\u015fir. Muhasebe kadar s\u0131k\u0131 parola politikalar\u0131, ancak daha uzun
CONNECT_TIME<\/code> (uzun s\u00fcreli veri giri\u015fi).<\/li>\n<\/ul>\nDBA ekibi, bu departmanlar\u0131n ihtiya\u00e7lar\u0131na g\u00f6re \u00fc\u00e7 farkl\u0131 profil olu\u015fturdu:<\/p>\n
\nMUHASEBE_PROF\u0130L\u0130<\/code><\/li>\nSATI\u015e_PROF\u0130L\u0130<\/code><\/li>\n\u0130K_PROF\u0130L\u0130<\/code><\/li>\n<\/ol>\nHer bir profil, kendi departman\u0131n\u0131n \u00f6zg\u00fcn gereksinimlerini kar\u015f\u0131layacak \u015fekilde kaynak ve parola limitleriyle yap\u0131land\u0131r\u0131ld\u0131. \u00d6rne\u011fin, MUHASEBE_PROF\u0130L\u0130<\/code>'nde PASSWORD_LIFE_TIME<\/code> 60 g\u00fcn iken, SATI\u015e_PROF\u0130L\u0130<\/code>'nde bu s\u00fcre 120 g\u00fcn olarak belirlendi. Bu strateji, sadece veritaban\u0131 g\u00fcvenli\u011fini art\u0131rmakla kalmad\u0131, ayn\u0131 zamanda her departman\u0131n veritaban\u0131n\u0131 verimli bir \u015fekilde kullanmas\u0131n\u0131 sa\u011flad\u0131 ve genel sistem kaynaklar\u0131n\u0131 daha dengeli bir \u015fekilde y\u00f6netmeye yard\u0131mc\u0131 oldu.<\/p>\n\u0130leri d\u00fczey profil y\u00f6netimi, Oracle veritaban\u0131n\u0131z\u0131n sadece g\u00fcvenli de\u011fil, ayn\u0131 zamanda esnek ve \u00f6l\u00e7eklenebilir olmas\u0131n\u0131 sa\u011flar. Do\u011fru yap\u0131land\u0131r\u0131lm\u0131\u015f profiller, veritaban\u0131n\u0131z\u0131n gelecekteki ihtiya\u00e7lar\u0131na adapte olmas\u0131na ve i\u015f s\u00fcre\u00e7lerinizi kesintisiz desteklemesine olanak tan\u0131r.<\/p>\n
\nSonu\u00e7 ve S\u0131k\u00e7a Sorulan Sorular<\/h2>\n
Oracle veritaban\u0131 profilleri, kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini kontrol alt\u0131na alman\u0131n, parola politikalar\u0131n\u0131 merkezi olarak uygulaman\u0131n ve genel veritaban\u0131 g\u00fcvenli\u011fini art\u0131rman\u0131n vazge\u00e7ilmez bir arac\u0131d\u0131r. Bu makalede, profil nedir sorusundan ba\u015flayarak, profil olu\u015fturma, kaynak limitleri atama, g\u00fc\u00e7l\u00fc parola politikalar\u0131 uygulama ve ileri d\u00fczey y\u00f6netim tekniklerine kadar geni\u015f bir yelpazeyi ele ald\u0131k. Ger\u00e7ek d\u00fcnya senaryolar\u0131 ve ad\u0131m ad\u0131m kod \u00f6rnekleri ile profillerin sadece teknik bir gereklilik de\u011fil, ayn\u0131 zamanda kritik bir stratejik y\u00f6netim arac\u0131 oldu\u011funu g\u00f6sterdik.<\/p>\n
Do\u011fru yap\u0131land\u0131r\u0131lm\u0131\u015f profiller sayesinde, veritaban\u0131n\u0131z\u0131n performans\u0131n\u0131 optimize edebilir, potansiyel g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 kapatabilir ve reg\u00fclatif uyumluluk gereksinimlerini kar\u015f\u0131layabilirsiniz. Unutmay\u0131n ki, her veritaban\u0131 ortam\u0131n\u0131n kendine \u00f6zg\u00fc ihtiya\u00e7lar\u0131 vard\u0131r ve profil ayarlar\u0131n\u0131z\u0131 bu ihtiya\u00e7lara g\u00f6re \u00f6zelle\u015ftirmek, en iyi sonu\u00e7lar\u0131 elde etmenin anahtar\u0131d\u0131r. Profil y\u00f6netimi, dinamik bir s\u00fcre\u00e7tir ve veritaban\u0131 kullan\u0131m modelleriniz de\u011fi\u015ftik\u00e7e profillerinizi d\u00fczenli olarak g\u00f6zden ge\u00e7irmeniz ve g\u00fcncellemeniz \u00f6nerilir. Bu, veritaban\u0131n\u0131z\u0131n uzun vadeli sa\u011fl\u0131\u011f\u0131n\u0131 ve g\u00fcvenli\u011fini sa\u011flaman\u0131n proaktif bir yoludur.<\/p>\n
S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h3>\n
1. Bir kullan\u0131c\u0131ya zaten atanm\u0131\u015f bir profili de\u011fi\u015ftirdi\u011fimde, bu de\u011fi\u015fiklikler hemen mi ge\u00e7erli olur?<\/strong>
\nGenellikle, profil de\u011fi\u015fiklikleri kullan\u0131c\u0131n\u0131n bir sonraki oturum a\u00e7\u0131\u015f\u0131nda ge\u00e7erli olur. Mevcut oturumlar, profilin parola politikalar\u0131 d\u0131\u015f\u0131ndaki kaynak limitleri gibi de\u011fi\u015fikliklerden genellikle etkilenmez. Ancak, belirli durumlarda Oracle oturumu sonland\u0131rabilir veya belirli limitlerin a\u015f\u0131lmas\u0131 durumunda uyar\u0131 verebilir.<\/p>\n2. Bir kullan\u0131c\u0131n\u0131n profilini nas\u0131l \"kapatabilirim\" veya devre d\u0131\u015f\u0131 b\u0131rakabilirim?<\/strong>
\nBir kullan\u0131c\u0131n\u0131n profili \"kapatmak\" diye bir kavram yoktur. Bir kullan\u0131c\u0131ya her zaman bir profil atanm\u0131\u015f olmal\u0131d\u0131r. E\u011fer \u00f6zel bir profilin uygulanmas\u0131n\u0131 istemiyorsan\u0131z, kullan\u0131c\u0131y\u0131 DEFAULT<\/code> profile atayabilirsiniz. Bunun i\u00e7in ALTER USER username PROFILE DEFAULT;<\/code> komutunu kullanman\u0131z yeterlidir.<\/p>\n3. Kendi \u00f6zel parola do\u011frulama fonksiyonumu nas\u0131l yazar\u0131m ve bir profile nas\u0131l atar\u0131m?<\/strong>
\n\u00d6zel parola do\u011frulama fonksiyonlar\u0131 PL\/SQL ile yaz\u0131l\u0131r ve genellikle SYS<\/code> kullan\u0131c\u0131s\u0131 taraf\u0131ndan olu\u015fturulur. Fonksiyonun ana g\u00f6revi, parolan\u0131n kurallara uygun olup olmad\u0131\u011f\u0131n\u0131 kontrol etmektir. Bir kez olu\u015fturuldu\u011funda, CREATE PROFILE<\/code> veya ALTER PROFILE<\/code> komutlar\u0131nda PASSWORD_VERIFY_FUNCTION your_function_name;<\/code> \u015feklinde kullan\u0131labilir.<\/p>\n4. Bir profili silersem ne olur?<\/strong>
\nE\u011fer bir profili silmeye \u00e7al\u0131\u015f\u0131rs\u0131n\u0131z ve o profil hala bir veya daha fazla kullan\u0131c\u0131ya atanm\u0131\u015fsa, Oracle bir hata verir. Bu durumda, profili DROP PROFILE profile_name CASCADE;<\/code> komutuyla silmelisiniz. CASCADE<\/code> anahtar kelimesi, bu profili kullanan t\u00fcm kullan\u0131c\u0131lar\u0131 otomatik olarak DEFAULT<\/code> profile atar. Bu nedenle, bir profili silmeden \u00f6nce DEFAULT<\/code> profilin ayarlar\u0131n\u0131n, etkilenen kullan\u0131c\u0131lar i\u00e7in uygun oldu\u011fundan emin olmal\u0131s\u0131n\u0131z.<\/p>\n5. Profilin kaynak limitleri a\u015f\u0131l\u0131rsa ne olur?<\/strong>
\nBir kullan\u0131c\u0131 bir profilin kaynak limitlerini a\u015farsa (\u00f6rne\u011fin, CONNECT_TIME<\/code> veya SESSIONS_PER_USER<\/code>), Oracle veritaban\u0131 otomatik olarak kullan\u0131c\u0131n\u0131n oturumunu sonland\u0131r\u0131r ve genellikle bir hata mesaj\u0131 ile bilgilendirme yapar. Bu, di\u011fer kullan\u0131c\u0131lar\u0131n ve sistemin genel stabilitesinin korunmas\u0131na yard\u0131mc\u0131 olur.<\/p>\n<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik…","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-36127","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\n
Oracle Veritaban\u0131'nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik<\/title>\n<meta name=\"description\" content=\"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. B\u00fcy\u00fck sistemlerdeki kullan\u0131c\u0131 say\u0131s\u0131n\u0131n artmas\u0131yla beraber, her bir kullan\u0131c\u0131n\u0131n davran\u0131\u015f\u0131n\u0131 kontrol alt\u0131nda tutmak karma\u015f\u0131k bir s\u00fcre\u00e7 haline gelebilir. Peki, performans d\u00fc\u015f\u00fc\u015flerini ve g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 nas\u0131l standart hale getirebiliriz? Bu makale, Oracle veritabanlar\u0131ndaki zorunlu profil kavram\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131kl\u0131yor, nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131, uygulanaca\u011f\u0131n\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi ve performans\u0131n\u0131z\u0131 nas\u0131l g\u00fc\u00e7lendirebilece\u011finizi g\u00f6steriyor.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle Veritaban\u0131'nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik\" \/>\n<meta property=\"og:description\" content=\"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. B\u00fcy\u00fck sistemlerdeki kullan\u0131c\u0131 say\u0131s\u0131n\u0131n artmas\u0131yla beraber, her bir kullan\u0131c\u0131n\u0131n davran\u0131\u015f\u0131n\u0131 kontrol alt\u0131nda tutmak karma\u015f\u0131k bir s\u00fcre\u00e7 haline gelebilir. Peki, performans d\u00fc\u015f\u00fc\u015flerini ve g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 nas\u0131l standart hale getirebiliriz? Bu makale, Oracle veritabanlar\u0131ndaki zorunlu profil kavram\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131kl\u0131yor, nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131, uygulanaca\u011f\u0131n\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi ve performans\u0131n\u0131z\u0131 nas\u0131l g\u00fc\u00e7lendirebilece\u011finizi g\u00f6steriyor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-08T14:00:50+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"21 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Oracle Veritaban\u0131’nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik\",\"datePublished\":\"2025-12-08T14:00:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\"},\"wordCount\":3656,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\",\"name\":\"Oracle Veritaban\u0131'nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-12-08T14:00:50+00:00\",\"description\":\"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. B\u00fcy\u00fck sistemlerdeki kullan\u0131c\u0131 say\u0131s\u0131n\u0131n artmas\u0131yla beraber, her bir kullan\u0131c\u0131n\u0131n davran\u0131\u015f\u0131n\u0131 kontrol alt\u0131nda tutmak karma\u015f\u0131k bir s\u00fcre\u00e7 haline gelebilir. Peki, performans d\u00fc\u015f\u00fc\u015flerini ve g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 nas\u0131l standart hale getirebiliriz? Bu makale, Oracle veritabanlar\u0131ndaki zorunlu profil kavram\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131kl\u0131yor, nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131, uygulanaca\u011f\u0131n\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi ve performans\u0131n\u0131z\u0131 nas\u0131l g\u00fc\u00e7lendirebilece\u011finizi g\u00f6steriyor.\",\"breadcrumb\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\/\/fatihsoysal.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Oracle Veritaban\u0131’nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/\",\"name\":\"Fatihsoysal.com\",\"description\":\"Blog - Yaz\u0131l\u0131m D\u00fcnyas\u0131 Tecr\u00fcbelerim\",\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/fatihsoysal.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"tr\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\",\"name\":\"Fatih Soysal\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png\",\"contentUrl\":\"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png\",\"width\":512,\"height\":512,\"caption\":\"Fatih Soysal\"},\"logo\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/\"},\"description\":\"Kullan\u0131m ve kodlama m\u00fckemmeliyetini odak alan uygulamalar olu\u015fturma deneyimine sahip, profesyonel olarak 15+ y\u0131l \u00fczeri deneyime sahip bir yaz\u0131l\u0131m m\u00fchendisi.\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/author\/fatihsoysal\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Oracle Veritaban\u0131'nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik","description":"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. B\u00fcy\u00fck sistemlerdeki kullan\u0131c\u0131 say\u0131s\u0131n\u0131n artmas\u0131yla beraber, her bir kullan\u0131c\u0131n\u0131n davran\u0131\u015f\u0131n\u0131 kontrol alt\u0131nda tutmak karma\u015f\u0131k bir s\u00fcre\u00e7 haline gelebilir. Peki, performans d\u00fc\u015f\u00fc\u015flerini ve g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 nas\u0131l standart hale getirebiliriz? Bu makale, Oracle veritabanlar\u0131ndaki zorunlu profil kavram\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131kl\u0131yor, nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131, uygulanaca\u011f\u0131n\u0131 ve veritaban\u0131 g\u00fcvenli\u011finizi ve performans\u0131n\u0131z\u0131 nas\u0131l g\u00fc\u00e7lendirebilece\u011finizi g\u00f6steriyor.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fatihsoysal.com\/blog\/oracle-veritabaninda-zorunlu-profil-yonetimi-ve-guvenlik\/","og_locale":"tr_TR","og_type":"article","og_title":"Oracle Veritaban\u0131'nda Zorunlu Profil Y\u00f6netimi ve G\u00fcvenlik","og_description":"Oracle veritabanlar\u0131nda kullan\u0131c\u0131lar\u0131n kaynak t\u00fcketimini ve g\u00fcvenlik politikalar\u0131n\u0131 merkezi olarak y\u00f6netmek, sistem stabilitesi ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in kritik \u00f6neme sahiptir. 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