Comments on: FOR UPDATE NOWAIT引起REDO LOG激增 http://www.oracledba.com.cn/blog/archives/295 Fri, 21 Nov 2008 03:18:47 +0000 http://wordpress.org/?v=2.0.2 by: boson http://www.oracledba.com.cn/blog/archives/295#comment-5826 Sun, 10 Jun 2007 15:47:03 +0000 http://www.oracledba.com.cn/blog/archives/295#comment-5826 这个周五我也遇到了这事....当时郁闷了...几秒种130M的redo.log满了。.后来加到了512...但是问题还是依然没有解决...后来强制结束了一些LOCK,问题才解决的..到现在也没怎么明白..不知道和你的情况是否一致.幸运的是那个时候业务基本都停了.. Checkpoint not complete Current log# 10 seq# 16578 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log Thu Jun 7 18:54:42 2007 Thread 1 advanced to log sequence 16579 Current log# 11 seq# 16579 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log Thu Jun 7 18:54:42 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 18:54:42 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 18:55:14 2007 Thread 1 cannot allocate new log, sequence 16580 Checkpoint not complete Current log# 11 seq# 16579 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log Thu Jun 7 18:56:46 2007 Thread 1 advanced to Current log# 7 seq# 16580 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log Thu Jun 7 18:57:11 2007 Thread 1 cannot allocate new log, sequence 16581 Checkpoint not complete Current log# 7 seq# 16580 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log Thu Jun 7 19:02:00 2007 Thread 1 advanced to log sequence 16581 Current log# 8 seq# 16581 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:00 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:02:13 2007 Thread 1 cannot allocate new log, sequence 16582 Checkpoint not complete Current log# 8 seq# 16581 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log Thu Jun 7 19:06:29 2007 Thread 1 advanced to log sequence 16582 Current log# 9 seq# 16582 mem# 0: /u01/app/oracle/oradata/orcl/redo9.log Thu Jun 7 19:06:40 2007 Thread 1 cannot allocate new log, sequence 16583 Checkpoint not complete Current log# 9 seq# 16582 mem# 0: /u01/app/oracle/oradata/orcl/redo9.log Thu Jun 7 19:10:26 2007 Thread 1 advanced to log sequence 16583 Current log# 10 seq# 16583 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WAThu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:26 2007 WARNING: inbound connection timed out (ORA-3136) Thu Jun 7 19:10:37 2007 Thread 1 cannot allocate new log, sequence 16584 Checkpoint not complete Current log# 10 seq# 16583 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log Thu Jun 7 19:14:55 2007 Thread 1 advanced to log sequence 16584 Current log# 11 seq# 16584 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log Thu Jun 7 19:15:21 2007 Thread 1 cannot allocate new log, sequence 16585 Checkpoint not complete Current log# 11 seq# 16584 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log Thu Jun 7 19:16:39 2007 Thread 1 advanced to log sequence 16585 Current log# 7 seq# 16585 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log Thu Jun 7 19:17:01 2007 Thread 1 cannot allocate new log, sequence 1658Checkpoint not complete Current log# 7 seq# 16585 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log Thu Jun 7 19:17:33 2007 Thread 1 advanced to log sequence 16586 Current log# 8 seq# 16586 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log 这个周五我也遇到了这事....当时郁闷了...几秒种130M的redo.log满了。.后来加到了512…但是问题还是依然没有解决...后来强制结束了一些LOCK,问题才解决的..到现在也没怎么明白..不知道和你的情况是否一致.幸运的是那个时候业务基本都停了..
Checkpoint not complete

Current log# 10 seq# 16578 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log
Thu Jun 7 18:54:42 2007
Thread 1 advanced to log sequence 16579
Current log# 11 seq# 16579 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log
Thu Jun 7 18:54:42 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 18:54:42 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 18:55:14 2007
Thread 1 cannot allocate new log, sequence 16580
Checkpoint not complete
Current log# 11 seq# 16579 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log
Thu Jun 7 18:56:46 2007
Thread 1 advanced to Current log# 7 seq# 16580 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log
Thu Jun 7 18:57:11 2007
Thread 1 cannot allocate new log, sequence 16581
Checkpoint not complete
Current log# 7 seq# 16580 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log
Thu Jun 7 19:02:00 2007
Thread 1 advanced to log sequence 16581
Current log# 8 seq# 16581 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:00 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:02:13 2007
Thread 1 cannot allocate new log, sequence 16582
Checkpoint not complete
Current log# 8 seq# 16581 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log
Thu Jun 7 19:06:29 2007
Thread 1 advanced to log sequence 16582
Current log# 9 seq# 16582 mem# 0: /u01/app/oracle/oradata/orcl/redo9.log
Thu Jun 7 19:06:40 2007
Thread 1 cannot allocate new log, sequence 16583
Checkpoint not complete
Current log# 9 seq# 16582 mem# 0: /u01/app/oracle/oradata/orcl/redo9.log
Thu Jun 7 19:10:26 2007
Thread 1 advanced to log sequence 16583
Current log# 10 seq# 16583 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WAThu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:26 2007
WARNING: inbound connection timed out (ORA-3136)
Thu Jun 7 19:10:37 2007
Thread 1 cannot allocate new log, sequence 16584
Checkpoint not complete
Current log# 10 seq# 16583 mem# 0: /u01/app/oracle/oradata/orcl/redo10.log
Thu Jun 7 19:14:55 2007
Thread 1 advanced to log sequence 16584
Current log# 11 seq# 16584 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log
Thu Jun 7 19:15:21 2007
Thread 1 cannot allocate new log, sequence 16585
Checkpoint not complete
Current log# 11 seq# 16584 mem# 0: /u01/app/oracle/oradata/orcl/redo11.log
Thu Jun 7 19:16:39 2007
Thread 1 advanced to log sequence 16585
Current log# 7 seq# 16585 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log
Thu Jun 7 19:17:01 2007
Thread 1 cannot allocate new log, sequence 1658Checkpoint not complete
Current log# 7 seq# 16585 mem# 0: /u01/app/oracle/oradata/orcl/redo7.log
Thu Jun 7 19:17:33 2007
Thread 1 advanced to log sequence 16586
Current log# 8 seq# 16586 mem# 0: /u01/app/oracle/oradata/orcl/redo8.log

]]> by: David.Guo http://www.oracledba.com.cn/blog/archives/295#comment-5568 Sat, 02 Jun 2007 09:02:34 +0000 http://www.oracledba.com.cn/blog/archives/295#comment-5568 事实上,我们测试的时候,只有一个session进来,绝对干净的环境,也会产生和数据量大致相等的redo 所以,这个玩意还是别用了,害死人 事实上,我们测试的时候,只有一个session进来,绝对干净的环境,也会产生和数据量大致相等的redo
所以,这个玩意还是别用了,害死人

]]> by: Jojo http://www.oracledba.com.cn/blog/archives/295#comment-5538 Fri, 01 Jun 2007 14:29:06 +0000 http://www.oracledba.com.cn/blog/archives/295#comment-5538 for update的话，如果有其他应用在访问那些记录 则会生成UNDO记录，UNDO本身会生成REDO for update的话，如果有其他应用在访问那些记录
则会生成UNDO记录，UNDO本身会生成REDO

]]> by: David.Guo http://www.oracledba.com.cn/blog/archives/295#comment-5517 Thu, 31 May 2007 15:59:45 +0000 http://www.oracledba.com.cn/blog/archives/295#comment-5517 还是老大分析的透彻,下次得好好和你学习学习这个原理问题了. 还是老大分析的透彻,下次得好好和你学习学习这个原理问题了.

]]> by: anysql http://www.oracledba.com.cn/blog/archives/295#comment-5508 Thu, 31 May 2007 11:52:22 +0000 http://www.oracledba.com.cn/blog/archives/295#comment-5508 Redo Layer 11, Opcode 4 = Lock Row Piece Redo Layer 11, Opcode 4 = Lock Row Piece

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