{"id":34613,"date":"2025-11-19T20:40:53","date_gmt":"2025-11-19T17:40:53","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=34613"},"modified":"2025-11-19T20:40:53","modified_gmt":"2025-11-19T17:40:53","slug":"eclipsete-outofmemory-hatasi-cozumu-heap-bellegi-ve-permgen-alanini-artirma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/eclipsete-outofmemory-hatasi-cozumu-heap-bellegi-ve-permgen-alanini-artirma\/","title":{"rendered":"Eclipse&#8217;te OutOfMemory Hatas\u0131 \u00c7\u00f6z\u00fcm\u00fc: Heap Belle\u011fi ve Permgen Alan\u0131n\u0131 Art\u0131rma"},"content":{"rendered":"<p><body><\/p>\n<h2>Eclipse&#8217;te OutOfMemory Hatas\u0131 \u00c7\u00f6z\u00fcm\u00fc: Heap Belle\u011fi ve Permgen Alan\u0131n\u0131 Art\u0131rma<\/h2>\n<p>Yaz\u0131l\u0131m geli\u015ftiricilerin g\u00fcnl\u00fck rutinlerinde kar\u015f\u0131la\u015ft\u0131\u011f\u0131 en sinir bozucu hatalardan biri, \u00f6zellikle Java tabanl\u0131 IDE&#8217;ler olan Eclipse gibi ortamlarda ortaya \u00e7\u0131kan &#8220;OutOfMemoryError&#8221; hatas\u0131d\u0131r. Bu hata, geli\u015ftirme s\u00fcrecini kesintiye u\u011fratarak verimlili\u011fi d\u00fc\u015f\u00fcrebilir ve bazen projenin durmas\u0131na bile neden olabilir. Eclipse gibi kapsaml\u0131 bir IDE, bir\u00e7ok eklenti, b\u00fcy\u00fck projeler ve e\u015f zamanl\u0131 \u00e7al\u0131\u015fan s\u00fcre\u00e7lerle birlikte kullan\u0131ld\u0131\u011f\u0131nda, varsay\u0131lan bellek ayarlar\u0131 yetersiz kalabilir. Bu makalede, OutOfMemoryError hatas\u0131n\u0131n ne oldu\u011funu, neden ortaya \u00e7\u0131kt\u0131\u011f\u0131n\u0131, Java bellek modelini ve en \u00f6nemlisi, bu hatay\u0131 Heap belle\u011fi ve Permgen\/Metaspace alanlar\u0131n\u0131 art\u0131rarak nas\u0131l \u00e7\u00f6zebilece\u011fimizi detayl\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n<h3>OutOfMemoryError Nedir ve Neden Ortaya \u00c7\u0131kar?<\/h3>\n<p>Java Sanal Makinesi (JVM), uygulamalar\u0131n \u00e7al\u0131\u015fmas\u0131 i\u00e7in belirli bir bellek alan\u0131 tahsis eder. Bu bellek alan\u0131, uygulaman\u0131n nesnelerini, s\u0131n\u0131flar\u0131n\u0131, metotlar\u0131n\u0131 ve di\u011fer \u00e7al\u0131\u015fma zaman\u0131 verilerini depolar. &#8220;OutOfMemoryError&#8221; hatas\u0131, JVM&#8217;nin, kendisi i\u00e7in tahsis edilen bellek alan\u0131nda yeni bir nesne veya veri depolamak i\u00e7in yeterli yer bulamad\u0131\u011f\u0131nda f\u0131rlatt\u0131\u011f\u0131 bir \u00e7al\u0131\u015fma zaman\u0131 hatas\u0131d\u0131r. Bu, genellikle uygulaman\u0131n gereksinimlerinin, JVM&#8217;ye ayr\u0131lan maksimum bellek kapasitesini a\u015ft\u0131\u011f\u0131 anlam\u0131na gelir.<\/p>\n<p>Eclipse gibi bir IDE ba\u011flam\u0131nda, bu hata genellikle a\u015fa\u011f\u0131daki senaryolarda ortaya \u00e7\u0131kar:<\/p>\n<ul>\n<li>\u00c7ok say\u0131da b\u00fcy\u00fck boyutlu projenin ayn\u0131 anda a\u00e7\u0131k olmas\u0131.<\/li>\n<li>\u00c7ok say\u0131da eklentinin (plugin) kullan\u0131lmas\u0131 ve bu eklentilerin y\u00fckl\u00fc olmas\u0131.<\/li>\n<li>Bellek yo\u011fun i\u015flemlerin yap\u0131lmas\u0131 (\u00f6rne\u011fin, b\u00fcy\u00fck bir kod taban\u0131nda arama, karma\u015f\u0131k bir derleme i\u015flemi, statik kod analizi).<\/li>\n<li>Eclipse i\u00e7inde birden fazla uygulama sunucusunun veya veritaban\u0131 ba\u011flant\u0131s\u0131n\u0131n \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131.<\/li>\n<li>Bellek s\u0131z\u0131nt\u0131s\u0131 olan bir eklentinin veya uygulaman\u0131n kullan\u0131lmas\u0131 (bu durum, bellek art\u0131r\u0131lsa bile sorunun tekrarlamas\u0131na neden olabilir).<\/li>\n<\/ul>\n<p>Bu hata, farkl\u0131 bellek alanlar\u0131nda ortaya \u00e7\u0131kabilir ve hatan\u0131n detay\u0131nda hangi alan\u0131n doldu\u011fu belirtilir. En yayg\u0131n olanlar\u0131 &#8220;Java heap space&#8221;, &#8220;PermGen space&#8221; ve &#8220;Metaspace&#8221; hatalar\u0131d\u0131r. Bu alanlar\u0131 anlamak, sorunu do\u011fru bir \u015fekilde te\u015fhis ve \u00e7\u00f6zmek i\u00e7in kritik \u00f6neme sahiptir.<\/p>\n<h3>Java Bellek Modeli Temelleri<\/h3>\n<p>JVM, \u00e7al\u0131\u015fma zaman\u0131nda farkl\u0131 ama\u00e7lar i\u00e7in belle\u011fi \u00e7e\u015fitli b\u00f6lgelere ay\u0131r\u0131r. Bu b\u00f6lgeleri anlamak, OutOfMemoryError&#8217;\u0131 gidermek i\u00e7in temel bir ad\u0131md\u0131r.<\/p>\n<h4>Heap Alan\u0131 (Y\u0131\u011f\u0131n Bellek)<\/h4>\n<p>Heap, Java uygulamalar\u0131n\u0131n nesnelerini depolad\u0131\u011f\u0131 \u00e7al\u0131\u015fma zaman\u0131 veri alan\u0131d\u0131r. Java&#8217;da <code>new<\/code> anahtar kelimesiyle olu\u015fturulan t\u00fcm nesneler ve diziler Heap&#8217;te saklan\u0131r. Bu alan, uygulaman\u0131n ya\u015fam d\u00f6ng\u00fcs\u00fc boyunca dinamik olarak b\u00fcy\u00fcyebilir ve k\u00fc\u00e7\u00fclebilir. Heap belle\u011fi, genellikle gen\u00e7 nesil (Young Generation) ve ya\u015fl\u0131 nesil (Old Generation) olmak \u00fczere iki ana b\u00f6l\u00fcme ayr\u0131l\u0131r.<\/p>\n<ul>\n<li><strong>Gen\u00e7 Nesil (Young Generation):<\/strong> Yeni olu\u015fturulan nesneler ilk olarak bu b\u00f6l\u00fcme yerle\u015ftirilir. Gen\u00e7 nesil, genellikle Eden Space ve iki Survivor Space (S0 ve S1) olarak alt b\u00f6l\u00fcmlere ayr\u0131l\u0131r. K\u00fc\u00e7\u00fck \u00e7\u00f6p toplama (Minor GC) i\u015flemleri burada ger\u00e7ekle\u015fir. H\u0131zl\u0131ca eri\u015filemeyen veya referans edilmeyen nesneler h\u0131zla temizlenir.<\/li>\n<li><strong>Ya\u015fl\u0131 Nesil (Old Generation):<\/strong> Gen\u00e7 nesilde birden fazla \u00e7\u00f6p toplama i\u015fleminden sa\u011f \u00e7\u0131kan veya b\u00fcy\u00fck boyutlu nesneler ya\u015fl\u0131 nesile ta\u015f\u0131n\u0131r. Bu nesnelerin daha uzun \u00f6m\u00fcrl\u00fc oldu\u011fu varsay\u0131l\u0131r. B\u00fcy\u00fck \u00e7\u00f6p toplama (Major GC veya Full GC) i\u015flemleri ya\u015fl\u0131 nesilde ger\u00e7ekle\u015fir ve genellikle daha maliyetlidir.<\/li>\n<\/ul>\n<p>Heap belle\u011fi yetersiz kald\u0131\u011f\u0131nda, genellikle <code>java.lang.OutOfMemoryError: Java heap space<\/code> hatas\u0131yla kar\u015f\u0131la\u015f\u0131rs\u0131n\u0131z.<\/p>\n<h4>Permgen Alan\u0131 (Kal\u0131c\u0131 \u00dcretim Alan\u0131 &#8211; Java 8 \u00d6ncesi)<\/h4>\n<p>Java 8 \u00f6ncesi JVM s\u00fcr\u00fcmlerinde (Java 7, 6 vb.), Permgen (Permanent Generation) alan\u0131, JVM&#8217;nin s\u0131n\u0131f metadatalar\u0131n\u0131, metot bilgilerini, statik de\u011fi\u015fkenleri ve String havuzunu (String Pool) depolad\u0131\u011f\u0131 \u00f6zel bir aland\u0131. Bu alan, Heap&#8217;ten ayr\u0131 bir bellek b\u00f6lgesindeydi ve boyutu genellikle sabit veya s\u0131n\u0131rl\u0131yd\u0131. \u00d6zellikle \u00e7ok say\u0131da s\u0131n\u0131f y\u00fckleyen veya dinamik olarak s\u0131n\u0131f olu\u015fturan uygulamalar (\u00f6rne\u011fin, web sunucular\u0131, ORM ara\u00e7lar\u0131, AOP k\u00fct\u00fcphaneleri) bu alanda OutOfMemoryError hatas\u0131yla kar\u015f\u0131la\u015fabilirdi.<\/p>\n<p>Permgen alan\u0131 yetersiz kald\u0131\u011f\u0131nda, genellikle <code>java.lang.OutOfMemoryError: PermGen space<\/code> hatas\u0131yla kar\u015f\u0131la\u015f\u0131rs\u0131n\u0131z.<\/p>\n<h4>Metaspace (Java 8 ve Sonras\u0131)<\/h4>\n<p>Java 8 ile birlikte Permgen alan\u0131 kald\u0131r\u0131ld\u0131 ve yerini Metaspace ald\u0131. Metaspace, i\u015fletim sisteminin yerel belle\u011fini (native memory) kullan\u0131r ve varsay\u0131lan olarak s\u0131n\u0131rs\u0131z bir boyuta sahiptir (sistem belle\u011fi izin verdi\u011fi s\u00fcrece). Bu de\u011fi\u015fiklik, Permgen boyutunu ayarlama gereksinimini b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ortadan kald\u0131rm\u0131\u015ft\u0131r. Ancak, Metaspace&#8217;in de bir \u00fcst s\u0131n\u0131r\u0131 ayarlanabilir ve bu s\u0131n\u0131r a\u015f\u0131ld\u0131\u011f\u0131nda <code>java.lang.OutOfMemoryError: Metaspace<\/code> hatas\u0131 al\u0131nabilir. Metaspace, temel olarak s\u0131n\u0131f metadatas\u0131 i\u00e7in kullan\u0131l\u0131r.<\/p>\n<h4>Stack Alan\u0131 (Y\u0131\u011f\u0131n \u00c7er\u00e7evesi)<\/h4>\n<p>Stack alan\u0131, her i\u015f par\u00e7ac\u0131\u011f\u0131 (thread) i\u00e7in olu\u015fturulan ve metot \u00e7a\u011fr\u0131lar\u0131n\u0131, yerel de\u011fi\u015fkenleri ve operasyon i\u015fleyicilerini depolayan bir bellek b\u00f6lgesidir. Her metot \u00e7a\u011fr\u0131s\u0131, Stack \u00fczerinde bir y\u0131\u011f\u0131n \u00e7er\u00e7evesi (stack frame) olu\u015fturur. Stack alan\u0131 Heap&#8217;ten ve Permgen\/Metaspace&#8217;ten tamamen farkl\u0131d\u0131r. Genellikle \u00f6zyinelemeli (recursive) metot \u00e7a\u011fr\u0131lar\u0131n\u0131n sonsuz d\u00f6ng\u00fcye girmesi veya \u00e7ok derin \u00e7a\u011fr\u0131 zincirlerinin olu\u015fmas\u0131 durumunda <code>java.lang.StackOverflowError<\/code> hatas\u0131yla kar\u015f\u0131la\u015f\u0131l\u0131r. Bu, OutOfMemoryError ile kar\u0131\u015ft\u0131r\u0131lmamal\u0131d\u0131r, ancak bellek y\u00f6netimiyle ilgili ba\u015fka bir sorundur.<\/p>\n<h4>JVM Arg\u00fcmanlar\u0131<\/h4>\n<p>Yukar\u0131da bahsedilen bellek alanlar\u0131n\u0131n boyutlar\u0131, JVM ba\u015flat\u0131l\u0131rken belirli arg\u00fcmanlar arac\u0131l\u0131\u011f\u0131yla yap\u0131land\u0131r\u0131labilir. Bu arg\u00fcmanlar, OutOfMemoryError sorununu \u00e7\u00f6zmek i\u00e7in anahtar rol oynar:<\/p>\n<ul>\n<li><strong><code>-Xms<size><\/code>:<\/strong> JVM&#8217;nin ba\u015flat\u0131ld\u0131\u011f\u0131 minimum Heap bellek boyutunu belirler. \u00d6rne\u011fin, <code>-Xms512m<\/code>.<\/li>\n<li><strong><code>-Xmx<size><\/code>:<\/strong> JVM&#8217;nin kullanabilece\u011fi maksimum Heap bellek boyutunu belirler. Bu, genellikle OutOfMemoryError: Java heap space hatas\u0131n\u0131 gidermek i\u00e7in art\u0131r\u0131lan ana arg\u00fcmand\u0131r. \u00d6rne\u011fin, <code>-Xmx2048m<\/code>.<\/li>\n<li><strong><code>-XX:PermSize=<size><\/code>:<\/strong> Java 8 \u00f6ncesi s\u00fcr\u00fcmlerde, Permgen alan\u0131n\u0131n ba\u015flang\u0131\u00e7 boyutunu belirler. \u00d6rne\u011fin, <code>-XX:PermSize=256m<\/code>.<\/li>\n<li><strong><code>-XX:MaxPermSize=<size><\/code>:<\/strong> Java 8 \u00f6ncesi s\u00fcr\u00fcmlerde, Permgen alan\u0131n\u0131n maksimum boyutunu belirler. Bu, OutOfMemoryError: PermGen space hatas\u0131n\u0131 gidermek i\u00e7in art\u0131r\u0131lan ana arg\u00fcmand\u0131r. \u00d6rne\u011fin, <code>-XX:MaxPermSize=512m<\/code>.<\/li>\n<li><strong><code>-XX:MetaspaceSize=<size><\/code>:<\/strong> Java 8 ve sonras\u0131 s\u00fcr\u00fcmlerde, Metaspace&#8217;in ba\u015flang\u0131\u00e7 boyutunu belirler. \u00d6rne\u011fin, <code>-XX:MetaspaceSize=256m<\/code>.<\/li>\n<li><strong><code>-XX:MaxMetaspaceSize=<size><\/code>:<\/strong> Java 8 ve sonras\u0131 s\u00fcr\u00fcmlerde, Metaspace&#8217;in maksimum boyutunu belirler. Bu, OutOfMemoryError: Metaspace hatas\u0131n\u0131 gidermek i\u00e7in art\u0131r\u0131lan ana arg\u00fcmand\u0131r. Varsay\u0131lan olarak s\u0131n\u0131rs\u0131zd\u0131r, ancak belirli bir \u00fcst s\u0131n\u0131r koymak i\u00e7in kullan\u0131labilir. \u00d6rne\u011fin, <code>-XX:MaxMetaspaceSize=512m<\/code>.<\/li>\n<li><strong><code>-Xss<size><\/code>:<\/strong> Her i\u015f par\u00e7ac\u0131\u011f\u0131 i\u00e7in Stack bellek boyutunu belirler. StackOverflowError&#8217;u \u00f6nlemek i\u00e7in kullan\u0131labilir. \u00d6rne\u011fin, <code>-Xss1m<\/code>.<\/li>\n<\/ul>\n<h3>Eclipse&#8217;te OutOfMemoryError&#8217;\u0131n Yayg\u0131n Nedenleri<\/h3>\n<p>Eclipse, modern geli\u015ftirme ortamlar\u0131n\u0131n karma\u015f\u0131kl\u0131\u011f\u0131 nedeniyle bellek sorunlar\u0131na daha yatk\u0131n olabilir. \u0130\u015fte en yayg\u0131n nedenler ve bunlar\u0131n nas\u0131l bellek sorunlar\u0131na yol a\u00e7t\u0131\u011f\u0131:<\/p>\n<h4>B\u00fcy\u00fck Projeler ve \u00c7al\u0131\u015fma Alanlar\u0131<\/h4>\n<p>\u00c7ok say\u0131da mod\u00fcl\u00fc, k\u00fct\u00fcphaneyi ve binlerce s\u0131n\u0131f\u0131 i\u00e7eren b\u00fcy\u00fck \u00f6l\u00e7ekli kurumsal projeler, Eclipse&#8217;in bellekte tutmas\u0131 gereken metadata miktar\u0131n\u0131 art\u0131r\u0131r. Bu projelerin derlenmesi, indekslenmesi veya kod analizi yap\u0131lmas\u0131, Heap ve Metaspace (veya Permgen) alanlar\u0131nda yo\u011fun bellek t\u00fcketimine neden olabilir. Bir \u00e7al\u0131\u015fma alan\u0131nda (workspace) ayn\u0131 anda birden fazla bu t\u00fcr projenin a\u00e7\u0131k olmas\u0131, bellek t\u00fckenme riskini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.<\/p>\n<h4>\u00c7ok Say\u0131da Eklenti (Plugin) Kullan\u0131m\u0131<\/h4>\n<p>Eclipse&#8217;in g\u00fcc\u00fc, zengin eklenti ekosisteminden gelir. Ancak her eklenti, kendi s\u0131n\u0131flar\u0131n\u0131, kaynaklar\u0131n\u0131 ve \u00e7al\u0131\u015fma zaman\u0131 verilerini JVM&#8217;ye y\u00fckler. Git entegrasyonlar\u0131, Maven\/Gradle ara\u00e7lar\u0131, kod kalitesi analiz\u00f6rleri (Sonarlint gibi), veritaban\u0131 istemcileri, temalar ve di\u011fer geli\u015ftirme ara\u00e7lar\u0131, ba\u015flang\u0131\u00e7ta ve \u00e7al\u0131\u015fma s\u0131ras\u0131nda \u00f6nemli miktarda bellek t\u00fcketebilir. E\u011fer gereksiz eklentiler etkinse veya k\u00f6t\u00fc yaz\u0131lm\u0131\u015f, bellek s\u0131z\u0131nt\u0131s\u0131 olan eklentiler kullan\u0131l\u0131yorsa, bu durum OutOfMemoryError&#8217;a yol a\u00e7abilir.<\/p>\n<h4>Bellek S\u0131z\u0131nt\u0131lar\u0131<\/h4>\n<p>Bellek s\u0131z\u0131nt\u0131s\u0131, bir uygulaman\u0131n art\u0131k ihtiya\u00e7 duymad\u0131\u011f\u0131 belle\u011fi serbest b\u0131rakmamas\u0131 durumudur. Java&#8217;da \u00e7\u00f6p toplama (Garbage Collection) mekanizmas\u0131 bu t\u00fcr sorunlar\u0131 otomatik olarak y\u00f6netmeyi hedefler, ancak bazen referanslar yanl\u0131\u015f tutuldu\u011funda veya d\u00f6ng\u00fcsel referanslar olu\u015ftu\u011funda \u00e7\u00f6p toplay\u0131c\u0131 nesneleri temizleyemez. Eclipse&#8217;in kendisinde, kullan\u0131lan bir eklentide veya geli\u015ftirilen uygulamada bir bellek s\u0131z\u0131nt\u0131s\u0131 olmas\u0131, JVM&#8217;nin bellek kullan\u0131m\u0131n\u0131n s\u00fcrekli artmas\u0131na ve sonunda OutOfMemoryError&#8217;a neden olabilir. Bu durumda, sadece bellek tahsisini art\u0131rmak ge\u00e7ici bir \u00e7\u00f6z\u00fcm olabilir; as\u0131l sorunu bulup d\u00fczeltmek gerekir.<\/p>\n<h4>Eclipse \u0130\u00e7inde Birden Fazla Uygulama\/Sunucu \u00c7al\u0131\u015ft\u0131rma<\/h4>\n<p>Web geli\u015ftiricileri genellikle Eclipse i\u00e7inde Tomcat, Jetty gibi uygulama sunucular\u0131n\u0131 veya Spring Boot gibi embeddable sunucular\u0131 \u00e7al\u0131\u015ft\u0131r\u0131r. Her bir sunucu veya uygulama, kendi JVM s\u00fcre\u00e7lerini veya en az\u0131ndan kendi s\u0131n\u0131f y\u00fckleyicilerini ve bellek alanlar\u0131n\u0131 kullan\u0131r. Birden fazla sunucu veya test \u00f6rne\u011fi ayn\u0131 anda \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, Eclipse&#8217;in kendi belle\u011fi ve bu ek JVM&#8217;lerin bellek gereksinimleri birle\u015ferek toplam bellek t\u00fcketimini art\u0131r\u0131r ve OutOfMemoryError&#8217;a yol a\u00e7abilir.<\/p>\n<h4>Karma\u015f\u0131k Derleme S\u00fcre\u00e7leri<\/h4>\n<p>Maven veya Gradle gibi derleme ara\u00e7lar\u0131, \u00f6zellikle b\u00fcy\u00fck projelerde, \u00e7ok say\u0131da ba\u011f\u0131ml\u0131l\u0131\u011f\u0131 \u00e7\u00f6z\u00fcmlemek, kaynak kodunu derlemek ve JAR dosyalar\u0131 olu\u015fturmak i\u00e7in \u00f6nemli miktarda bellek kullan\u0131r. Bu derleme i\u015flemleri Eclipse&#8217;in arka plan\u0131nda \u00e7al\u0131\u015ft\u0131\u011f\u0131nda, IDE&#8217;nin kendi bellek t\u00fcketimine ek olarak, derleme arac\u0131n\u0131n da bellek ihtiya\u00e7lar\u0131 kar\u015f\u0131lanmal\u0131d\u0131r. \u00d6zellikle h\u0131zl\u0131 ve art\u0131ml\u0131 derlemeler s\u0131ras\u0131nda belle\u011fin verimli y\u00f6netilememesi, OutOfMemoryError&#8217;a neden olabilir.<\/p>\n<h3>Sorunu Te\u015fhis Etme<\/h3>\n<p>Bir OutOfMemoryError ile kar\u015f\u0131la\u015ft\u0131\u011f\u0131n\u0131zda, sorunun k\u00f6kenini anlamak i\u00e7in hata mesaj\u0131n\u0131 dikkatlice okumak ve gerekirse bellek izleme ara\u00e7lar\u0131n\u0131 kullanmak \u00f6nemlidir.<\/p>\n<h4>Hata Mesajlar\u0131<\/h4>\n<p>JVM taraf\u0131ndan f\u0131rlat\u0131lan OutOfMemoryError mesaj\u0131, genellikle hangi bellek alan\u0131n\u0131n doldu\u011funu a\u00e7\u0131k\u00e7a belirtir:<\/p>\n<ul>\n<li><strong><code>java.lang.OutOfMemoryError: Java heap space<\/code>:<\/strong> Bu, uygulaman\u0131n Heap belle\u011finde yeni nesneler i\u00e7in yeterli alan bulamad\u0131\u011f\u0131 anlam\u0131na gelir. En yayg\u0131n OutOfMemoryError t\u00fcr\u00fcd\u00fcr.<\/li>\n<li><strong><code>java.lang.OutOfMemoryError: PermGen space<\/code> (Java 8 \u00f6ncesi):<\/strong> Permgen alan\u0131n\u0131n doldu\u011funu g\u00f6sterir. Genellikle \u00e7ok say\u0131da s\u0131n\u0131f\u0131n y\u00fcklenmesi veya dinamik s\u0131n\u0131f olu\u015fturma ile ili\u015fkilidir.<\/li>\n<li><strong><code>java.lang.OutOfMemoryError: Metaspace<\/code> (Java 8 ve sonras\u0131):<\/strong> Metaspace alan\u0131n\u0131n doldu\u011funu g\u00f6sterir. Permgen&#8217;in modern kar\u015f\u0131l\u0131\u011f\u0131d\u0131r ve s\u0131n\u0131f metadatalar\u0131 i\u00e7in kullan\u0131l\u0131r.<\/li>\n<li><strong><code>java.lang.OutOfMemoryError: GC overhead limit exceeded<\/code>:<\/strong> JVM&#8217;nin \u00e7\u00f6p toplama i\u00e7in harcad\u0131\u011f\u0131 zaman\u0131n \u00e7ok y\u00fcksek oldu\u011funu ve \u00e7ok az bellek geri kazanabildi\u011fini g\u00f6sterir. Bu, genellikle uygulaman\u0131n Heap&#8217;i neredeyse tamamen doldurdu\u011fu ve \u00e7\u00f6p toplay\u0131c\u0131n\u0131n s\u00fcrekli \u00e7al\u0131\u015ft\u0131\u011f\u0131 ancak etkili olamad\u0131\u011f\u0131 durumlarda ortaya \u00e7\u0131kar. Genellikle yetersiz Heap alan\u0131 veya bellek s\u0131z\u0131nt\u0131s\u0131 belirtisidir.<\/li>\n<li><strong><code>java.lang.OutOfMemoryError: Unable to create new native thread<\/code>:<\/strong> \u0130\u015fletim sistemi seviyesinde yeni bir i\u015f par\u00e7ac\u0131\u011f\u0131 olu\u015fturulamad\u0131\u011f\u0131 anlam\u0131na gelir. Bu, genellikle JVM&#8217;nin \u00e7ok say\u0131da i\u015f par\u00e7ac\u0131\u011f\u0131 olu\u015fturmaya \u00e7al\u0131\u015fmas\u0131 ve i\u015fletim sisteminin bu iste\u011fi kar\u015f\u0131layamamas\u0131 veya JVM&#8217;nin kendisine ayr\u0131lan Stack bellek alan\u0131n\u0131n t\u00fckenmesi durumunda ortaya \u00e7\u0131kar.<\/li>\n<\/ul>\n<h4>Bellek \u0130zleme Ara\u00e7lar\u0131<\/h4>\n<p>Daha derinlemesine analiz i\u00e7in, JVM&#8217;nin bellek kullan\u0131m\u0131n\u0131 izleyen ve bellek d\u00f6k\u00fcmlerini (heap dumps) analiz eden ara\u00e7lar kullan\u0131labilir:<\/p>\n<ul>\n<li><strong>Eclipse Memory Analyzer Tool (MAT):<\/strong> Eclipse eklentisi olarak veya ba\u011f\u0131ms\u0131z bir uygulama olarak kullan\u0131labilen g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Bir Heap d\u00f6k\u00fcm\u00fcn\u00fc (<code>.hprof<\/code> dosyas\u0131) analiz ederek bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131, en \u00e7ok bellek t\u00fcketen nesneleri ve s\u0131n\u0131f y\u00fckleyicilerini tespit etmeye yard\u0131mc\u0131 olur. Hata olu\u015ftu\u011funda otomatik olarak Heap d\u00f6k\u00fcm\u00fc olu\u015fturmak i\u00e7in JVM arg\u00fcmanlar\u0131na <code>-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=\/path\/to\/dump<\/code> eklenebilir.<\/li>\n<li><strong>JConsole ve VisualVM:<\/strong> Hem JConsole hem de VisualVM, \u00e7al\u0131\u015fan bir JVM&#8217;ye ba\u011flanarak bellek kullan\u0131m\u0131n\u0131, i\u015f par\u00e7ac\u0131klar\u0131n\u0131, s\u0131n\u0131f y\u00fcklemesini ve \u00e7\u00f6p toplama aktivitesini ger\u00e7ek zamanl\u0131 olarak izlemenizi sa\u011flayan JDK ile birlikte gelen ara\u00e7lard\u0131r. Bu ara\u00e7lar, bellek kullan\u0131m\u0131ndaki ani art\u0131\u015flar\u0131 veya s\u00fcrekli y\u00fckselen bellek t\u00fcketimini g\u00f6zlemlemek i\u00e7in faydal\u0131d\u0131r.<\/li>\n<\/ul>\n<h3>\u00c7\u00f6z\u00fcm Yollar\u0131: Bellek Tahsisini Art\u0131rma<\/h3>\n<p>OutOfMemoryError&#8217;\u0131 \u00e7\u00f6zmenin en yayg\u0131n ve genellikle en etkili yolu, Eclipse&#8217;in veya \u00e7al\u0131\u015ft\u0131rd\u0131\u011f\u0131n\u0131z uygulaman\u0131n JVM&#8217;sine ayr\u0131lan bellek miktar\u0131n\u0131 art\u0131rmakt\u0131r. Bu, iki ana yolla yap\u0131labilir:<\/p>\n<h4>Eclipse&#8217;in Kendi JVM Arg\u00fcmanlar\u0131 (eclipse.ini)<\/h4>\n<p>Eclipse&#8217;in kendisi de bir Java uygulamas\u0131 oldu\u011fundan, kendi JVM&#8217;sinde \u00e7al\u0131\u015f\u0131r ve bu JVM&#8217;nin bellek ayarlar\u0131 <code>eclipse.ini<\/code> dosyas\u0131 arac\u0131l\u0131\u011f\u0131yla yap\u0131land\u0131r\u0131l\u0131r. Bu dosya, Eclipse kurulum dizininde bulunur ve IDE&#8217;nin ba\u015flang\u0131\u00e7 parametrelerini i\u00e7erir. \u0130\u015fte <code>eclipse.ini<\/code> dosyas\u0131n\u0131 d\u00fczenleyerek bellek ayarlar\u0131n\u0131 nas\u0131l yapaca\u011f\u0131n\u0131z:<\/p>\n<ol>\n<li><strong><code>eclipse.ini<\/code> Dosyas\u0131n\u0131 Bulma:<\/strong>\n<p><code>eclipse.ini<\/code> dosyas\u0131, genellikle Eclipse&#8217;i kurdu\u011funuz dizinin k\u00f6k klas\u00f6r\u00fcnde, <code>eclipse.exe<\/code> veya <code>eclipse<\/code> y\u00fcr\u00fct\u00fclebilir dosyas\u0131n\u0131n yan\u0131nda bulunur.<\/p>\n<\/li>\n<li><strong>Dosyay\u0131 A\u00e7ma:<\/strong>\n<p>Bir metin d\u00fczenleyici (Notepad, Sublime Text, VS Code vb.) ile <code>eclipse.ini<\/code> dosyas\u0131n\u0131 a\u00e7\u0131n. Y\u00f6netici izinleri gerekebilir.<\/p>\n<\/li>\n<li><strong>Mevcut Ayarlar\u0131 Anlama:<\/strong>\n<p>Dosyan\u0131n i\u00e7inde <code>-Xms<\/code>, <code>-Xmx<\/code>, <code>-XX:MaxPermSize<\/code> veya <code>-XX:MaxMetaspaceSize<\/code> gibi arg\u00fcmanlar\u0131 aray\u0131n. E\u011fer yoksa, siz ekleyeceksiniz.<\/p>\n<p>\u00d6rnek bir <code>eclipse.ini<\/code> i\u00e7eri\u011fi \u015f\u00f6yle g\u00f6r\u00fcnebilir:<\/p>\n<pre><code>-startup\nplugins\/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar\n--launcher.library\nplugins\/org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.600.v20220914-0738\n-product\norg.eclipse.epp.package.java.product\n-showsplash\norg.eclipse.platform\n--launcher.defaultAction\nopenFile\n--launcher.appendVmargs\n-vmargs\n-Dosgi.requiredJavaVersion=11\n-Dosgi.instance.area.default=@user.home\/eclipse-workspace\n-XX:+UseG1GC\n-XX:+UseStringDeduplication\n-Dosgi.module.lock.timeout=10\n-Xms256m\n-Xmx2048m\n--add-modules=ALL-SYSTEM\n<\/code><\/pre>\n<\/li>\n<li><strong>Bellek Arg\u00fcmanlar\u0131n\u0131 D\u00fczenleme\/Ekleme:<\/strong>\n<p><code>-vmargs<\/code> sat\u0131r\u0131n\u0131n alt\u0131nda yer alan bellek arg\u00fcmanlar\u0131n\u0131 bulun ve de\u011ferlerini art\u0131r\u0131n. <code>-vmargs<\/code> sat\u0131r\u0131n\u0131n \u00fcst\u00fcndeki hi\u00e7bir \u015feyi de\u011fi\u015ftirmemeye dikkat edin, aksi takdirde Eclipse ba\u015flamayabilir. T\u00fcm JVM arg\u00fcmanlar\u0131 <code>-vmargs<\/code> sat\u0131r\u0131ndan sonra gelmelidir.<\/p>\n<ul>\n<li><strong>Heap Belle\u011fi \u0130\u00e7in (<code>java.lang.OutOfMemoryError: Java heap space<\/code>):<\/strong>\n<p><code>-Xms<\/code> ve <code>-Xmx<\/code> de\u011ferlerini art\u0131r\u0131n. <code>-Xms<\/code>, JVM&#8217;nin ba\u015flang\u0131\u00e7ta ay\u0131raca\u011f\u0131 bellek miktar\u0131n\u0131, <code>-Xmx<\/code> ise maksimum ay\u0131rabilece\u011fi bellek miktar\u0131n\u0131 belirtir. Genellikle <code>-Xms<\/code> de\u011ferini <code>-Xmx<\/code> de\u011ferinin yakla\u015f\u0131k %25&#8217;i ila %50&#8217;si aral\u0131\u011f\u0131nda tutmak iyi bir uygulamad\u0131r, ancak performans sorunlar\u0131 ya\u015fam\u0131yorsan\u0131z ikisini e\u015fit de tutabilirsiniz (bu, \u00e7\u00f6p toplay\u0131c\u0131n\u0131n daha az \u00e7al\u0131\u015fmas\u0131na neden olabilir, ancak ilk ba\u015flatma s\u00fcresini uzatabilir).<\/p>\n<p>\u00d6rnek: E\u011fer <code>-Xms256m<\/code> ve <code>-Xmx1024m<\/code> ise, bunlar\u0131 a\u015fa\u011f\u0131daki gibi art\u0131rabilirsiniz:<\/p>\n<pre><code>-Xms512m\n-Xmx4096m<\/code><\/pre>\n<p>Burada <code>4096m<\/code>, 4 GB belle\u011fe denk gelir. Sisteminizdeki RAM miktar\u0131na ve di\u011fer uygulamalar\u0131n bellek ihtiya\u00e7lar\u0131na g\u00f6re bu de\u011feri ayarlay\u0131n. Genellikle 2 GB ile 8 GB aras\u0131 de\u011ferler kullan\u0131l\u0131r.<\/p>\n<\/li>\n<li><strong>Permgen Alan\u0131 \u0130\u00e7in (<code>java.lang.OutOfMemoryError: PermGen space<\/code> &#8211; Java 8 \u00f6ncesi):<\/strong>\n<p>E\u011fer Java 7 veya daha eski bir JVM kullan\u0131yorsan\u0131z ve Permgen hatas\u0131 al\u0131yorsan\u0131z, <code>-XX:MaxPermSize<\/code> arg\u00fcman\u0131n\u0131 art\u0131rman\u0131z gerekir.<\/p>\n<p>\u00d6rnek:<\/p>\n<pre><code>-XX:PermSize=256m\n-XX:MaxPermSize=512m<\/code><\/pre>\n<p>Bu de\u011ferler, genellikle 256 MB&#8217;dan 512 MB&#8217;a veya daha fazlas\u0131na \u00e7\u0131kar\u0131labilir.<\/p>\n<\/li>\n<li><strong>Metaspace Alan\u0131 \u0130\u00e7in (<code>java.lang.OutOfMemoryError: Metaspace<\/code> &#8211; Java 8 ve sonras\u0131):<\/strong>\n<p>Java 8 ve sonraki s\u00fcr\u00fcmler i\u00e7in Metaspace varsay\u0131lan olarak s\u0131n\u0131rs\u0131zd\u0131r. Ancak, bir s\u0131n\u0131r belirlediyseniz veya \u00e7ok fazla s\u0131n\u0131f y\u00fcklemesi yap\u0131l\u0131yorsa bu hata al\u0131nabilir. Bu durumda <code>-XX:MaxMetaspaceSize<\/code> arg\u00fcman\u0131n\u0131 art\u0131r\u0131n.<\/p>\n<p>\u00d6rnek:<\/p>\n<pre><code>-XX:MetaspaceSize=256m\n-XX:MaxMetaspaceSize=512m<\/code><\/pre>\n<p>Bu de\u011ferler, genellikle 256 MB&#8217;dan 512 MB&#8217;a veya daha fazlas\u0131na \u00e7\u0131kar\u0131labilir.<\/p>\n<\/li>\n<li><strong>Di\u011fer Faydal\u0131 Arg\u00fcmanlar:<\/strong>\n<ul>\n<li><code>-Xss<\/code>: Her i\u015f par\u00e7ac\u0131\u011f\u0131 i\u00e7in y\u0131\u011f\u0131n boyutunu ayarlar. Genellikle 1m (1 MB) yeterlidir. StackOverflowError al\u0131yorsan\u0131z art\u0131rabilirsiniz.<\/li>\n<li><code>-Dosgi.requiredJavaVersion<\/code>: Eclipse&#8217;in \u00e7al\u0131\u015fmas\u0131 i\u00e7in gereken Java s\u00fcr\u00fcm\u00fcn\u00fc belirtir.<\/li>\n<li><code>-XX:+UseG1GC<\/code>: Bellek y\u00f6netimi i\u00e7in G1 \u00c7\u00f6p Toplay\u0131c\u0131y\u0131 kullan\u0131r. B\u00fcy\u00fck Heap&#8217;ler i\u00e7in genellikle daha iyi performans sunar.<\/li>\n<li><code>-XX:+UseStringDeduplication<\/code>: String nesnelerinin bellekte daha verimli depolanmas\u0131n\u0131 sa\u011flar (Java 8u20 ve sonras\u0131).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Kaydet ve Yeniden Ba\u015flat:<\/strong>\n<p>De\u011fi\u015fiklikleri kaydedin ve Eclipse&#8217;i tamamen kapat\u0131p yeniden ba\u015flat\u0131n. Bellek ayarlar\u0131, Eclipse&#8217;in bir sonraki ba\u015flat\u0131l\u0131\u015f\u0131nda ge\u00e7erli olacakt\u0131r.<\/p>\n<\/li>\n<\/ol>\n<p><strong>\u00d6nemli Not:<\/strong> Sisteminizdeki toplam fiziksel belle\u011finizi (RAM) g\u00f6z \u00f6n\u00fcnde bulundurun. Eclipse&#8217;e \u00e7ok fazla bellek ay\u0131rmak, i\u015fletim sisteminin ve di\u011fer uygulamalar\u0131n belleksiz kalmas\u0131na ve sistemin yava\u015flamas\u0131na neden olabilir. Genellikle toplam RAM&#8217;inizin %50-75&#8217;ini bir JVM&#8217;ye ay\u0131rmaktan ka\u00e7\u0131nmal\u0131s\u0131n\u0131z.<\/p>\n<h4>Proje\/\u00c7al\u0131\u015ft\u0131rma Konfig\u00fcrasyonu JVM Arg\u00fcmanlar\u0131<\/h4>\n<p>Yukar\u0131daki y\u00f6ntem, Eclipse IDE&#8217;sinin kendisi i\u00e7in bellek ayarlar\u0131n\u0131 de\u011fi\u015ftirir. Ancak, Eclipse i\u00e7inde \u00e7al\u0131\u015ft\u0131rd\u0131\u011f\u0131n\u0131z bir Java uygulamas\u0131 (\u00f6rne\u011fin, bir web uygulamas\u0131, bir masa\u00fcst\u00fc uygulamas\u0131 veya bir JUnit testi) da kendi OutOfMemoryError hatas\u0131n\u0131 verebilir. Bu durumda, uygulaman\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131 JVM&#8217;nin bellek ayarlar\u0131n\u0131 d\u00fczenlemeniz gerekir. Bu ayarlar, Eclipse&#8217;in &#8220;Run Configurations&#8221; veya &#8220;Debug Configurations&#8221; men\u00fcs\u00fcnde yap\u0131l\u0131r.<\/p>\n<ol>\n<li><strong>Run\/Debug Configurations&#8217;\u0131 A\u00e7ma:<\/strong>\n<p>Eclipse&#8217;te, men\u00fcden <code>Run > Run Configurations...<\/code> veya <code>Run > Debug Configurations...<\/code> se\u00e7ene\u011fini t\u0131klay\u0131n.<\/p>\n<\/li>\n<li><strong>Uygulaman\u0131z\u0131 Se\u00e7me:<\/strong>\n<p>Sol panelden, bellek ayarlar\u0131n\u0131 de\u011fi\u015ftirmek istedi\u011finiz Java uygulamas\u0131n\u0131, Maven build&#8217;i, Tomcat sunucusunu veya JUnit testini se\u00e7in.<\/p>\n<\/li>\n<li><strong>JVM Arg\u00fcmanlar\u0131n\u0131 Ayarlama:<\/strong>\n<p>Sa\u011fdaki sekmelerden <code>Arguments<\/code> sekmesine gidin. Burada iki alan bulacaks\u0131n\u0131z: <code>Program arguments<\/code> ve <code>VM arguments<\/code>. JVM bellek ayarlar\u0131 <code>VM arguments<\/code> alan\u0131na girilmelidir.<\/p>\n<p>Bu alana, yukar\u0131da <code>eclipse.ini<\/code> i\u00e7in bahsetti\u011fimiz <code>-Xms<\/code>, <code>-Xmx<\/code>, <code>-XX:MaxPermSize<\/code> veya <code>-XX:MaxMetaspaceSize<\/code> arg\u00fcmanlar\u0131n\u0131 ekleyin veya d\u00fczenleyin.<\/p>\n<p>\u00d6rnek:<\/p>\n<pre><code>-Xms512m -Xmx2048m -XX:MaxMetaspaceSize=512m<\/code><\/pre>\n<p>Birden fazla arg\u00fcman\u0131 bo\u015fluklarla ay\u0131rarak ayn\u0131 sat\u0131ra yazabilirsiniz.<\/p>\n<\/li>\n<li><strong>Uygula ve \u00c7al\u0131\u015ft\u0131r:<\/strong>\n<p>De\u011fi\u015fiklikleri kaydetmek i\u00e7in <code>Apply<\/code> d\u00fc\u011fmesine t\u0131klay\u0131n, ard\u0131ndan uygulaman\u0131z\u0131 yeni bellek ayarlar\u0131yla ba\u015flatmak i\u00e7in <code>Run<\/code> veya <code>Debug<\/code> d\u00fc\u011fmesine t\u0131klay\u0131n.<\/p>\n<\/li>\n<\/ol>\n<p>Bu y\u00f6ntem, \u00f6zellikle bir uygulaman\u0131n kendi i\u00e7inde bellek yo\u011fun i\u015flemler yapmas\u0131 veya b\u00fcy\u00fck veri k\u00fcmeleriyle \u00e7al\u0131\u015fmas\u0131 durumunda faydal\u0131d\u0131r. Eclipse&#8217;in kendi belle\u011fi yeterli olsa bile, \u00e7al\u0131\u015ft\u0131rd\u0131\u011f\u0131n\u0131z uygulaman\u0131n kendi belle\u011fi yetersiz kalabilir.<\/p>\n<h3>En \u0130yi Uygulamalar ve Ek Hususlar<\/h3>\n<p>Bellek tahsisini art\u0131rmak genellikle OutOfMemoryError&#8217;\u0131 \u00e7\u00f6zse de, bu her zaman kal\u0131c\u0131 bir \u00e7\u00f6z\u00fcm olmayabilir veya en iyi yakla\u015f\u0131m olmayabilir. \u0130\u015fte dikkate alman\u0131z gereken ek ipu\u00e7lar\u0131 ve en iyi uygulamalar:<\/p>\n<h4>D\u00fczenli Bellek Kullan\u0131m\u0131 \u0130zleme<\/h4>\n<p>Eclipse&#8217;in alt sa\u011f k\u00f6\u015fesinde genellikle mevcut Heap bellek kullan\u0131m\u0131n\u0131 g\u00f6steren bir g\u00f6sterge bulunur. Bu g\u00f6stergeyi d\u00fczenli olarak kontrol edin. E\u011fer bellek kullan\u0131m\u0131 s\u00fcrekli olarak maksimuma yak\u0131n seyrediyorsa, bellek art\u0131rma veya bellek s\u0131z\u0131nt\u0131s\u0131 ara\u015ft\u0131rmas\u0131 yapma zaman\u0131 gelmi\u015f demektir. Daha detayl\u0131 izleme i\u00e7in JConsole veya VisualVM gibi ara\u00e7lar\u0131 kullan\u0131n.<\/p>\n<h4>Kullan\u0131lmayan Projeleri\/Perspektifleri Kapatma<\/h4>\n<p>Ayn\u0131 anda \u00e7ok say\u0131da projenin a\u00e7\u0131k olmas\u0131, Eclipse&#8217;in indeksleme, derleme ve di\u011fer arka plan i\u015flemleri i\u00e7in daha fazla bellek kullanmas\u0131na neden olur. \u00c7al\u0131\u015fmad\u0131\u011f\u0131n\u0131z projeleri kapatarak (<code>File > Close Project<\/code>) bellek y\u00fck\u00fcn\u00fc azaltabilirsiniz. Benzer \u015fekilde, kullanmad\u0131\u011f\u0131n\u0131z perspektifleri kapatmak veya gereksiz g\u00f6r\u00fcn\u00fcmleri gizlemek de yard\u0131mc\u0131 olabilir.<\/p>\n<h4>Gereksiz Eklentileri Devre D\u0131\u015f\u0131 B\u0131rakma<\/h4>\n<p>Eclipse&#8217;e y\u00fckledi\u011finiz her eklenti, belirli bir bellek y\u00fck\u00fc getirir. E\u011fer kullanmad\u0131\u011f\u0131n\u0131z veya nadiren kulland\u0131\u011f\u0131n\u0131z eklentiler varsa, bunlar\u0131 devre d\u0131\u015f\u0131 b\u0131rakmay\u0131 veya kald\u0131rmay\u0131 d\u00fc\u015f\u00fcn\u00fcn. Eklentileri y\u00f6netmek i\u00e7in <code>Help > About Eclipse IDE > Installation Details > Installed Software<\/code> yolunu izleyebilirsiniz. Buradan eklentileri kald\u0131rabilir veya <code>Window > Preferences > Install\/Update > Available Software Sites<\/code> b\u00f6l\u00fcm\u00fcnden g\u00fcncellemeleri y\u00f6netebilirsiniz.<\/p>\n<h4>Eclipse ve Eklentileri G\u00fcncel Tutma<\/h4>\n<p>Eclipse ve eklentilerin yeni s\u00fcr\u00fcmleri genellikle performans iyile\u015ftirmeleri ve bellek y\u00f6netimi optimizasyonlar\u0131 i\u00e7erir. Eski bir s\u00fcr\u00fcmde kar\u015f\u0131la\u015ft\u0131\u011f\u0131n\u0131z bir bellek s\u0131z\u0131nt\u0131s\u0131 veya verimsizlik, yeni bir s\u00fcr\u00fcmde d\u00fczeltilmi\u015f olabilir. D\u00fczenli olarak g\u00fcncellemeleri kontrol edin ve uygulay\u0131n.<\/p>\n<h4>64-bit JVM Kullanmay\u0131 D\u00fc\u015f\u00fcnme<\/h4>\n<p>E\u011fer 32-bit bir i\u015fletim sistemi veya JVM kullan\u0131yorsan\u0131z, genellikle maksimum Heap boyutu 1.5 GB ile 2 GB aras\u0131nda s\u0131n\u0131rl\u0131d\u0131r. Bu, b\u00fcy\u00fck projeler i\u00e7in yetersiz kalabilir. E\u011fer sisteminiz destekliyorsa, 64-bit bir i\u015fletim sistemi ve 64-bit bir JVM kullanmak, \u00e7ok daha b\u00fcy\u00fck bellek tahsislerine (\u00f6rne\u011fin 4 GB, 8 GB veya daha fazla) olanak tan\u0131r ve bellek k\u0131s\u0131tlamalar\u0131n\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ortadan kald\u0131r\u0131r.<\/p>\n<h4>Bellek Art\u0131rman\u0131n Getirileri ve G\u00f6t\u00fcr\u00fcleri<\/h4>\n<p>Belle\u011fi art\u0131rmak basit bir \u00e7\u00f6z\u00fcm gibi g\u00f6r\u00fcnse de, baz\u0131 yan etkileri olabilir:<\/p>\n<ul>\n<li><strong>Daha Fazla Sistem Kayna\u011f\u0131 T\u00fcketimi:<\/strong> Art\u0131r\u0131lan bellek, sisteminizin RAM&#8217;inden ayr\u0131l\u0131r. E\u011fer sisteminizde yeterli RAM yoksa veya di\u011fer uygulamalar da bellek yo\u011funsa, sisteminiz genel olarak yava\u015flayabilir veya takas (swap) belle\u011fi kullanmaya ba\u015flayabilir, bu da performans\u0131 d\u00fc\u015f\u00fcr\u00fcr.<\/li>\n<li><strong>Daha Uzun \u00c7\u00f6p Toplama Duraklamalar\u0131:<\/strong> Daha b\u00fcy\u00fck bir Heap, \u00e7\u00f6p toplay\u0131c\u0131n\u0131n (Garbage Collector) temizlemesi gereken daha fazla nesne oldu\u011fu anlam\u0131na gelir. Bu, \u00f6zellikle Full GC (tam \u00e7\u00f6p toplama) i\u015flemlerinde daha uzun duraklamalara (pause times) neden olabilir ve uygulaman\u0131n veya IDE&#8217;nin k\u0131sa s\u00fcreli donmalar\u0131na yol a\u00e7abilir. Bu durumu optimize etmek i\u00e7in \u00e7\u00f6p toplay\u0131c\u0131 ayarlar\u0131n\u0131 (\u00f6rne\u011fin, G1GC kullanmak) incelemek gerekebilir.<\/li>\n<\/ul>\n<h4>\u00c7\u00f6p Toplama (Garbage Collection) Ayarlar\u0131<\/h4>\n<p>Geli\u015fmi\u015f kullan\u0131c\u0131lar, JVM&#8217;nin \u00e7\u00f6p toplama stratejisini optimize ederek bellek performans\u0131n\u0131 daha da iyile\u015ftirebilirler. <code>-XX:+UseG1GC<\/code> gibi arg\u00fcmanlar, farkl\u0131 bir \u00e7\u00f6p toplay\u0131c\u0131 algoritmas\u0131 se\u00e7menizi sa\u011flar. Ancak bu ayarlar genellikle deneyim ve test gerektirir ve yanl\u0131\u015f yap\u0131land\u0131r\u0131ld\u0131\u011f\u0131nda performans\u0131 k\u00f6t\u00fcle\u015ftirebilir.<\/p>\n<h4>Bellek S\u0131z\u0131nt\u0131lar\u0131 ile Yetersiz Bellek Aras\u0131ndaki Fark<\/h4>\n<p>Bellek art\u0131rmak, genellikle yetersiz bellek sorununu \u00e7\u00f6zer. Ancak, e\u011fer OutOfMemoryError&#8217;\u0131n temel nedeni bir bellek s\u0131z\u0131nt\u0131s\u0131ysa, bellek art\u0131rmak sadece sorunu erteleyecektir. Bellek s\u0131z\u0131nt\u0131s\u0131 olan bir uygulama, ne kadar bellek verirseniz verin, sonunda o belle\u011fi dolduracakt\u0131r. Bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 te\u015fhis etmek i\u00e7in Eclipse Memory Analyzer gibi ara\u00e7lar\u0131 kullanmak ve Heap d\u00f6k\u00fcmlerini analiz etmek \u00f6nemlidir. E\u011fer MAT gibi ara\u00e7lar belirli nesnelerin veya s\u0131n\u0131f y\u00fckleyicilerinin s\u00fcrekli olarak b\u00fcy\u00fcd\u00fc\u011f\u00fcn\u00fc g\u00f6steriyorsa, bu bir bellek s\u0131z\u0131nt\u0131s\u0131n\u0131n i\u015faretidir ve kod seviyesinde d\u00fczeltme gerektirebilir.<\/p>\n<h3>Sonu\u00e7<\/h3>\n<p>Eclipse&#8217;te OutOfMemoryError hatas\u0131yla kar\u015f\u0131la\u015fmak, geli\u015ftirme s\u00fcrecinin do\u011fal bir par\u00e7as\u0131 olabilir, \u00f6zellikle b\u00fcy\u00fck ve karma\u015f\u0131k projelerde \u00e7al\u0131\u015f\u0131rken. Bu makalede ele ald\u0131\u011f\u0131m\u0131z gibi, hatan\u0131n temel nedenlerini anlamak ve Java bellek modelini tan\u0131mak, sorunu \u00e7\u00f6zmek i\u00e7in ilk ad\u0131md\u0131r. \u00c7o\u011fu durumda, Eclipse&#8217;in <code>eclipse.ini<\/code> dosyas\u0131ndaki veya \u00e7al\u0131\u015ft\u0131r\u0131lan uygulaman\u0131n <code>Run Configurations<\/code>&#8216;\u0131ndaki Heap ve Permgen\/Metaspace bellek ayarlar\u0131n\u0131 art\u0131rmak, sorunu h\u0131zl\u0131 ve etkili bir \u015fekilde \u00e7\u00f6zebilir.<\/p>\n<p>Ancak, bellek art\u0131rman\u0131n her zaman sihirli bir de\u011fnek olmad\u0131\u011f\u0131n\u0131 unutmamak gerekir. Sistem kaynaklar\u0131n\u0131z\u0131 dikkatli bir \u015fekilde y\u00f6netmeli, gereksiz eklentileri devre d\u0131\u015f\u0131 b\u0131rakmal\u0131 ve kullan\u0131lmayan projeleri kapatarak IDE&#8217;nizin bellek ayak izini minimumda tutmal\u0131s\u0131n\u0131z. Ayr\u0131ca, bir bellek s\u0131z\u0131nt\u0131s\u0131 olas\u0131l\u0131\u011f\u0131n\u0131 g\u00f6z ard\u0131 etmemeli ve gerekirse Eclipse Memory Analyzer gibi ara\u00e7larla daha derinlemesine analiz yapmal\u0131s\u0131n\u0131z. Do\u011fru yap\u0131land\u0131rma ve d\u00fczenli izleme ile Eclipse&#8217;i daha kararl\u0131 ve verimli bir geli\u015ftirme ortam\u0131 haline getirebilirsiniz.<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Eclipse&#8217;te OutOfMemory Hatas\u0131 \u00c7\u00f6z\u00fcm\u00fc: Heap Belle\u011fi ve Permgen Alan\u0131n\u0131 Art\u0131rma\nYaz\u0131l\u0131m geli\u015ftiricilerin g\u00fcnl\u00fck rutinlerinde kar\u015f\u0131la\u015f","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-34613","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - 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