oracle异常session,【案例】Oracle报错ORA04031用户在查询v$session报错

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运维DBA反映&＃xff0c;有工具登录Oracle数据库偶尔性报ORA-04031,经过分析是因为该工具需要查询v$session,经过分析确定是Bug 12808696

客户的数据库在出账期间有工具登录Oracle数据库偶尔性报ORA-04031,经过分析是因为该工具需要查询v$session,经过分析确定是Bug 12808696 – Shared pool memory leak of “hng: All sessi” memory (Doc ID 12808696.8),重现错误如下

1.节点1进行查询报ORA-4031

SQL> select count(*) from v$session;

COUNT(*)

----------

1536

SQL> select count(*) from gv$session;

COUNT(*)

----------

2089

SQL> select /*&＃43; full(t) */ count(*) from gv$session t;

COUNT(*)

----------

2053

SQL> select * from gv$session;

select * from gv$session

*

ERROR at line 1:

ORA-12801: error signaled in parallel query server PZ93, instance

ocs_db_2:zjocs2 (2)

ORA-04031: unable to allocate 308448 bytes of shared memory ("shared

pool","unknown object","sga heap(1,0)","hng: All sessions data for API.")

2.节点2进行查询报ORA-04031

SQL> select * from gv$session;

select * from gv$session

*

ERROR at line 1:

ORA-12801: error signaled in parallel query server PZ95, instance

ocs_db_2:zjocs2 (2)

ORA-04031: unable to allocate 308448 bytes of shared memory ("shared

pool","unknown object","sga heap(6,0)","hng: All sessions data for API.")

SQL> select * from v$session;

select * from v$session

*

ERROR at line 2:

ORA-04031: unable to allocate 308448 bytes of shared memory ("shared

pool","unknown object","sga heap(7,0)","hng: All sessions data for API.")

通过上述分析:确认是节点2的v$session遭遇到Bug 12808696&＃xff0c;导致在该节点中中查询v$session和Gv$session报ORA-04031&＃xff0c;而在节点1中查询v$session正常&＃xff0c;查询Gv$session报ORA-04031.

该bug在11.1.0.6中修复,所有的10g版本中未修复,只能通过临时重启来暂时避免,注意该bug通过flash shared_pool无法解决

如果您有权限可以进步一查询SR 3-7670890781: 查询v$session的BLOCKING_SESSION字段时&＃xff0c;出现ora-04031错误

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最权威、专业的Oracle案例资源汇总之【案例】Oracle报错ORA-04031 用户在查询v$session报错