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     [»ç·Ê]/*+ append */ ÈùÆ®¸¦ ÀÌ¿ëÇÑ ´ë¿ë·® insert ÀÛ¾÷½Ã ÁÖÀÇ »çÇ×
    park1q  2013-04-06 11:17:43, Á¶È¸ : 6,360, Ãßõ : 1325


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    insert /*+ append */ into target_t select /*+ full(s) parallel(s,5) */ * from source_t s ;
     
    ÇüÅ·Π´Ù·®ÀÇ µ¥ÀÌŸ(º»ÀÎÀÇ °æ¿ì 300MB) ¸¦ Insert ÇÒ¶§ ´ÙÀ½°ú °°ÀÌ
    ORA-1628: max # extents 4096 reached for rollback segment RBS113
    ¿¡·¯¸¦ ¸¸³¯¼ö ÀÖ´Ù. À̰æ¿ì RBS113 Àº 4096 ÀÌ Maxextent·Î ¼³Á¤µÇ¾î ÀÖÀ¸¹Ç·Î ´õÀÌ»óÀÇ ÀÛ¾÷ ¼öÇàÀÌ ºÒ°¡´ÉÇÏ´Ù.
     
    À§¿Í °°Àº ¿¡·¯ ¹ß»ý½Ã Å« Å©±âÀÇ ¼¼±×¸ÕÆ®¸¦ ´Ù½Ã ÇÒ´çÇØ Áְųª AUM (Automatic Undo Segment Management Mode)·Î ¹Ù²Ù°í Å×ÀÌºí½ºÆäÀ̽ºµµ ´Ã·ÁÁÖ°í ÇÏ´Â ÀÛ¾÷À» ÇÑÈÄ Àç¼öÇà ÇßÀ»½Ã ºñÁ¤»óÀûÀ¸·Î ¼¼±×¸ÕÆ® ÀͽºÅÙÆ®ÀÇ °æÇèÀ» ÇÒ¼ö ÀÖ´Ù.
     
    °æÇè»ó 300MB¸¦ Insert Çϴµ¥, 30GBÀÇ Rollback ¶Ç´Â Undo Tablespace °¡ Full »óŰ¡ µÇ¾ú´Ù.
     
    ´Ù °¢µµ·Î Á¶»çÇØº» °á°ú
    target_t ÀÇ ÇØ´ç ÆÄƼ¼ÇÀÌ clear µÇÁö ¾Ê¾Æ ¹ß»ýÇÑ ¿¡·¯·Î È®ÀεǾú°í,´ÙÀ½°ú °°ÀÌ
    alter table [target_t] truncate partition [ÆÄƼ¼Ç¸í] ;
    À» ½ÇÇàÇÑÈÄ insert ÀÛ¾÷ÀÌ ÁøÇàµÇ¾ú´Ù.
     
    ºÎ°¡ÀûÀ¸·Î ÆÄƼ¼Ç Å×ÀÌºí¿¡ µ¥ÀÌŸ¸¦ insert ÇÒ¶§ ÁÖÀÇ ÇØ¾ßÇÒ »çÇ×À¸·Î
    insert into [Å×À̺í¸í] partition [ÆÄƼ¼Ç¸í] select ~~ from ~~  ;
    ¿Í °°ÀÌ insert ÇÒ Å×À̺íÀÇ ÆÄƼ¼ÇÀ» ¹Ì¸® ÁöÁ¤ÇØ ÁÖ¾î¾ß TM Lock À» »çÀü¿¡ ¹æÁöÇÒ¼ö ÀÖ´Ù.


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