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标签归档:systemstate
使用ass109.awk分析systemstate
本篇介绍工具ass109.awk使用,大大节约分析systemstate dump文件时间.当然如果要获得详细信息,还是需要人工去读相关进程的dump文件.
模拟会话被hang住
--会话1 SQL> select * from t_xifenfei; ID NAME ---------- ---------------------------------------- 1 xifenfei 2 www.xifenfei SQL> delete from t_xifenfei where id=1; 1 row deleted. --会话2 SQL> delete from t_xifenfei where id=1; --hang住
做systemstate
SQL> oradebug setmypid Statement processed. SQL> oradebug unlimit Statement processed. SQL> oradebug dump systemstate 10 Statement processed. SQL> oradebug tracefile_name /u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_9976.trc SQL> exit
使用ass109.awk分析dump文件
[oracle@xifenfei ~]$ awk -f ass109.awk /u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_9976.trc Starting Systemstate 1 .................................. Ass.Awk Version 1.0.9 - Processing /u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_9976.trc System State 1 ~~~~~~~~~~~~~~~~ 1: 2: 0: waiting for 'pmon timer' 3: 0: waiting for 'rdbms ipc message' 4: 0: waiting for 'VKTM Logical Idle Wait' 5: 0: waiting for 'rdbms ipc message' 6: 0: waiting for 'DIAG idle wait' 7: 0: waiting for 'rdbms ipc message' 8: 0: waiting for 'DIAG idle wait' 9: 0: waiting for 'rdbms ipc message' 10: 0: waiting for 'rdbms ipc message' 11: 0: waiting for 'rdbms ipc message' 12: 0: waiting for 'rdbms ipc message' 13: 0: waiting for 'smon timer' 14: 0: waiting for 'rdbms ipc message' 15: 0: waiting for 'rdbms ipc message' 16: 0: waiting for 'rdbms ipc message' 17: 18: 19: 0: waiting for 'Space Manager: slave idle wait' 20: 0: waiting for 'SQL*Net message from client' 21: 0: waiting for 'enq: TX - row lock contention'[Enqueue TX-000A0020-0000024F] Cmd: Delete 22: 0: waiting for 'rdbms ipc message' 23: 0: waiting for 'rdbms ipc message' 24: 0: waiting for 'rdbms ipc message' 25: 0: waiting for 'rdbms ipc message' 26: 0: waiting for 'Streams AQ: qmn coordinator idle wait' 27: 28: 30: 0: waiting for 'Streams AQ: qmn slave idle wait' 31: 0: waiting for 'rdbms ipc message' 33: 1: waited for 'Streams AQ: waiting for time management or cleanup tasks' 35: 0: waiting for 'rdbms ipc message' 41: 44: Blockers ~~~~~~~~ Above is a list of all the processes. If they are waiting for a resource then it will be given in square brackets. Below is a summary of the waited upon resources, together with the holder of that resource. Notes: ~~~~~ o A process id of '???' implies that the holder was not found in the systemstate. Resource Holder State Enqueue TX-000A0020-0000024F 20: 0: waiting for 'SQL*Net message from client' Object Names ~~~~~~~~~~~~ Enqueue TX-000A0020-0000024F 30586 Lines Processed. --从这里马上就可以知道pid 21 请求Enqueue TX被pid 20阻塞
下载:ass109.awk