{"id":327,"date":"2024-12-24T14:15:00","date_gmt":"2024-12-24T11:15:00","guid":{"rendered":"https:\/\/oraclius.com.tr\/?p=327"},"modified":"2025-09-16T18:58:29","modified_gmt":"2025-09-16T15:58:29","slug":"oracle-undo-tablespace-degisimi-yeni-undo-tablespace-olusturma-ve-db-nodea-uygulama","status":"publish","type":"post","link":"https:\/\/oraclius.com.tr\/tr\/oracle-undo-tablespace-degisimi-yeni-undo-tablespace-olusturma-ve-db-nodea-uygulama\/","title":{"rendered":"Oracle Undo Tablespace De\u011fi\u015fimi: Yeni Undo Tablespace Olu\u015fturma ve DB Node’a Uygulama"},"content":{"rendered":"\n

Undo Tablespace Nedir ve Neden De\u011fi\u015ftirilmesi Gerekir?<\/h2>\n\n\n\n

Oracle veritabanlar\u0131nda undo tablespace, veritaban\u0131 i\u015flemleri s\u0131ras\u0131nda yap\u0131lan de\u011fi\u015fikliklerin geri al\u0131nabilmesi i\u00e7in kritik bir bile\u015fendir. Zamanla bu alan\u0131n b\u00fcy\u00fcmesi veya performans sorunlar\u0131na yol a\u00e7mas\u0131 nedeniyle mevcut undo tablespace’ini de\u011fi\u015ftirmek gerekebilir. Bu yaz\u0131da, Oracle veritabanlar\u0131nda yeni bir undo tablespace olu\u015fturman\u0131n ve bunu veritaban\u0131 node\u2019una uygulaman\u0131n ad\u0131mlar\u0131n\u0131 inceleyece\u011fiz.<\/p>\n\n\n\n

Bu yaz\u0131da, mevcut undo tablespace’inin yerine yeni bir undo tablespace<\/strong> olu\u015fturma ve Oracle DB node<\/strong>‘una uygulama s\u00fcrecini ad\u0131m ad\u0131m anlataca\u011f\u0131z. Bu i\u015flem, veritaban\u0131 y\u00f6netiminizi daha verimli hale getirebilir ve sistem performans\u0131n\u0131 art\u0131rabilir.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\n\n\n\n

Mevcut Undo Tablespace Kontrol\u00fc<\/h2>\n\n\n\n

Hangi UNDO tablespace<\/strong>‘in \u015fu anda kullan\u0131ld\u0131\u011f\u0131n\u0131 \u00f6\u011frenmek i\u00e7in:<\/p>\n\n\n\n

SQL> sho spparameter undo;\n\nSID\t NAME\t\t\t       TYPE\t   VALUE\n-------- ----------------------------- ----------- ----------------------------\n*\t temp_undo_enabled\t       boolean\n*\t undo_management\t       string\n*\t undo_retention \t       integer\norcl1\t undo_tablespace\t       string\t   UNDOTBS1\norcl2\t undo_tablespace\t       string\t   UNDOTBS2<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\n\n\n\n
Yeni Undo Tablespace \u0130\u00e7in Disk Alan\u0131 Haz\u0131rlama<\/h2>\n\n\n\n
Yeni bir undo tablespace olu\u015fturmak i\u00e7in \u00f6ncelikle uygun bir disk alan\u0131na ihtiyac\u0131n\u0131z var. Bu alan\u0131n yeterli b\u00fcy\u00fckl\u00fckte olmas\u0131, veritaban\u0131 i\u015flemlerinin sa\u011fl\u0131kl\u0131 bir \u015fekilde devam etmesi i\u00e7in \u00f6nemlidir.<\/p>\n\n\n\n
SQL> CREATE BIGFILE UNDO TABLESPACE UNDO_NEW_01\nDATAFILE '\/path\/to\/undo_tablespace01.dbf' SIZE 5G AUTOEXTEND ON NEXT 1G MAXSIZE UNLIMITED\nRETENTION NOGUARANTEE\nBLOCKSIZE 8K\nFLASHBACK ON;<\/code><\/pre>\n\n\n\n
    \n
  • CREATE BIGFILE UNDO TABLESPACE<\/mark><\/code><\/strong>:\n
      \n
    • Yeni bir undo tablespace olu\u015fturur.<\/li>\n\n\n\n
    • BIGFILE<\/code>, tablespace’in yaln\u0131zca tek bir b\u00fcy\u00fck veri dosyas\u0131na sahip olaca\u011f\u0131n\u0131 belirtir (\u00e7oklu veri dosyalar\u0131na izin verilmez). BIGFILE<\/code> tablespace’ler genellikle ASM kullan\u0131ld\u0131\u011f\u0131nda tercih edilir \u00e7\u00fcnk\u00fc ASM dosya y\u00f6netimini kolayla\u015ft\u0131r\u0131r.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • UNDO_NEW_01<\/mark><\/code><\/strong>:\n
        \n
      • Olu\u015fturulan undo tablespace’in ad\u0131. Bu ad\u0131 veritaban\u0131ndaki di\u011fer tablespace adlar\u0131yla kar\u0131\u015ft\u0131r\u0131lmamal\u0131d\u0131r.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • DATAFILE<\/mark><\/code><\/strong>:\n
          \n
        • Tablespace’in fiziksel veri dosyas\u0131n\u0131n ad\u0131n\u0131 ve konumunu belirtir.<\/li>\n\n\n\n
        • \u00d6rne\u011fin, ASM kullan\u0131yorsan\u0131z, bu yol +DATA\/UNDO\/undo_tablespace01.dbf<\/code> gibi olabilir.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • SIZE 5G<\/mark><\/code><\/strong>:\n
            \n
          • Veri dosyas\u0131n\u0131n ba\u015flang\u0131\u00e7 boyutunu 5 GB olarak ayarlar.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • AUTOEXTEND ON<\/mark><\/code><\/strong>:\n
              \n
            • Veri dosyas\u0131n\u0131n gerekti\u011finde otomatik olarak geni\u015flemesine izin verir.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • NEXT 1G<\/mark><\/code><\/strong>:\n
                \n
              • Veri dosyas\u0131n\u0131n geni\u015fleme ad\u0131m\u0131n\u0131 1 GB olarak belirler. Yani, dosya doldu\u011funda 1 GB ekler.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • MAXSIZE UNLIMITED<\/mark><\/code><\/strong>:\n
                  \n
                • Veri dosyas\u0131n\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fcne bir \u00fcst s\u0131n\u0131r koymaz. Alternatif olarak, bir s\u0131n\u0131r koymak isterseniz MAXSIZE 50G<\/code> gibi bir de\u011fer belirtebilirsiniz.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                • RETENTION NOGUARANTEE<\/mark><\/code><\/strong>:\n
                    \n
                  • Undo tablespace i\u00e7indeki undo bilgileri, gerekli oldu\u011funda \u00fczerine yaz\u0131labilir.<\/li>\n\n\n\n
                  • E\u011fer GUARANTEE<\/code> <\/strong>olarak ayarlansayd\u0131, undo bilgileri belirli bir s\u00fcre boyunca korunur ve \u00fczerine yaz\u0131lamazd\u0131, bu da \u00f6zellikle Flashback i\u015flemleri i\u00e7in kullan\u0131l\u0131r.<\/li>\n\n\n\n
                  • NOGUARANTEE<\/strong><\/code>, daha fazla undo segmentine ihtiya\u00e7 duyulursa, eski bilgiler \u00fczerine yaz\u0131lmas\u0131na izin verir.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                  • BLOCKSIZE 8K<\/mark><\/code><\/strong>:\n
                      \n
                    • Veri dosyas\u0131n\u0131n blok boyutunu 8 KB olarak ayarlar. Varsay\u0131lan blok boyutu genellikle 8 KB’dir.<\/li>\n\n\n\n
                    • Blok boyutunu art\u0131rmak, b\u00fcy\u00fck i\u015flemlerde I\/O performans\u0131n\u0131 art\u0131rabilir, ancak k\u00fc\u00e7\u00fck veriler i\u00e7in bu boyut gereksiz yere fazla olabilir.<\/li>\n\n\n\n
                    • Sadece veritaban\u0131 olu\u015fturulurken desteklenen BLOCKSIZE<\/code> de\u011ferleri kullan\u0131labilir (\u00f6rne\u011fin, 2K, 4K, 8K, 16K).<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                    • FLASHBACK ON<\/mark><\/strong>:\n
                        \n
                      • Undo tablespace’in Flashback \u00f6zellikleri i\u00e7in kullan\u0131labilir hale getirir.<\/li>\n\n\n\n
                      • Flashback, bir tabloyu veya veritaban\u0131n\u0131 ge\u00e7mi\u015f bir duruma d\u00f6nd\u00fcrmek i\u00e7in kullan\u0131l\u0131r.<\/li>\n\n\n\n
                      • FLASHBACK OFF<\/code> olarak ayarlarsan\u0131z, bu tablespace Flashback \u00f6zellikleri i\u00e7in kullan\u0131lamaz.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
                        <\/p>\n\n\n\n
                        \n\n\n\n
                        Yeni Undo Tablespace’ini Sistem Undo Tablespace Olarak Atama<\/h2>\n\n\n\n
                        Veritaban\u0131, varsay\u0131lan olarak bir undo tablespace kullan\u0131r. Yeni olu\u015fturdu\u011fumuz undo tablespace’ini veritaban\u0131 i\u00e7in varsay\u0131lan undo tablespace olarak ayarlamal\u0131y\u0131z. <\/p>\n\n\n\n
                        ALTER SYSTEM SET UNDO_TABLESPACE = 'UNDO_NEW_01' scope=BOTH sid='orcl1';<\/code><\/pre>\n\n\n\n
                        Scope=BOTH<\/mark><\/strong> ifadesi, yap\u0131lan de\u011fi\u015fikli\u011fi hem aktif bellek \u00fczerinde uygular hem de spfile dosyas\u0131na kaydedilir.<\/p>\n\n\n\n
                        sid=’node1′<\/mark><\/strong> ifadesi, yap\u0131lan de\u011fi\u015fikli\u011fin yaln\u0131zca belirli bir Oracle Instance<\/strong> (\u00f6rne\u011fin, node1<\/code>) \u00fczerinde uygulanmas\u0131n\u0131 sa\u011flamak i\u00e7in kullan\u0131l\u0131r<\/p>\n\n\n\n
                        <\/p>\n\n\n\n
                        \n\n\n\n
                        Yeni Undo Tablespace’i Kontrol Etme<\/h2>\n\n\n\n
                        Yap\u0131lan de\u011fi\u015fikli\u011fi kontrol edelim:<\/p>\n\n\n\n
                        SQL> sho spparameter undo;\n\nSID\t NAME\t\t\t       TYPE\t   VALUE\n-------- ----------------------------- ----------- ----------------------------\n*\t temp_undo_enabled\t       boolean\n*\t undo_management\t       string\n*\t undo_retention \t       integer\norcl1\t undo_tablespace\t       string\t   UNDO_NEW_01\norcl2\t undo_tablespace\t       string\t   UNDOTBS2<\/code><\/pre>\n\n\n\n
                        <\/p>\n\n\n\n
                        \n\n\n\n
                        Eski Undo Tablespace’ini Kullan\u0131m D\u0131\u015f\u0131 B\u0131rakma<\/h2>\n\n\n\n
                        Mevcut undo tablespace’ini devre d\u0131\u015f\u0131 b\u0131rakmadan \u00f6nce, yeni undo tablespace’inin do\u011fru \u015fekilde \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve t\u00fcm i\u015flemleri d\u00fczg\u00fcn bir \u015fekilde kaydetti\u011fini do\u011frulaman\u0131z gerekir.<\/p>\n\n\n\n
                        ALTER DATABASE DATAFILE '\/path\/to\/old_undo.dbf' OFFLINE;<\/code><\/pre>\n\n\n\n
                        <\/p>\n\n\n\n
                        \n\n\n\n
                        Eski Undo Tablespace’ini Silme<\/h2>\n\n\n\n
                        Eski undo tablespace dosyas\u0131n\u0131 tamamen silmek i\u00e7in a\u015fa\u011f\u0131daki komutu kullanabilirsiniz:<\/p>\n\n\n\n
                        DROP TABLESPACE old_undo INCLUDING CONTENTS AND DATAFILES;<\/code><\/pre>\n\n\n\n
                        Burada, INCLUDING CONTENTS AND DATAFILES<\/code> ifadesi, hem tablespace\u2019in hem de i\u00e7indeki t\u00fcm veri dosyalar\u0131n\u0131n silinmesini sa\u011flar.<\/p>\n","protected":false},"excerpt":{"rendered":"
                        Oracle veritaban\u0131nda mevcut undo tablespace’inin yerine yeni bir undo tablespace olu\u015fturma ve DB node’lar\u0131na uygulama ad\u0131mlar\u0131n\u0131 ke\u015ffedin. Sistem performans\u0131n\u0131 art\u0131rarak veritaban\u0131 y\u00f6netimini kolayla\u015ft\u0131r\u0131n<\/p>\n","protected":false},"author":1,"featured_media":329,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[118,121,124,127,130],"class_list":["post-327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel-en","tag-db-nodea-undo-tablespace-uygulama-tr","tag-oracle-performans-artirma-tr","tag-oracle-undo-tablespace-tr","tag-oracle-veritabani-yonetimi-tr","tag-yeni-undo-tablespace-olusturma-tr"],"yoast_head":"\nOracle Undo Tablespace De\u011fi\u015fimi: Yeni Undo Tablespace Olu\u015fturma ve DB Node'a Uygulama<\/title>\n<meta name=\"description\" content=\"Oracle veritaban\u0131nda mevcut undo tablespace'inin yerine yeni bir undo tablespace olu\u015fturma ve DB node'lar\u0131na uygulama ad\u0131mlar\u0131n\u0131 ke\u015ffedin. 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