转：并行进程出现ORA-27090错误

数据库节点1  kernel panic 了 （见上一篇文章），节点2 alert 日志报错ORA-27090

原文http://yangtingkun.itpub.net/post/468/527314

 

 

客户的RAC数据库出现ORA-27090错误。

 

 

 

详细的错误信息如下：

Wed May2 22:13:14 2012
Completed instance recovery at
Thread 1: logseq 22430, block 190818, scn 5430629987
4110 data blocks read, 4503 data blocks written, 43017 redo blocks read
Wed May2 22:13:15 2012
Thread 1 advanced to log sequence 22431 (thread recovery)
Wed May2 22:13:16 2012
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl2_p007_15968.trc:
ORA-27090: Message 27090 not found;product=RDBMS; facility=ORA
Linux-x86_64 Error: 4: Interrupted system call
Additional information: 3
Additional information: 128
Additional information: 65536
Wed May2 22:13:16 2012
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl2_p008_15970.trc:
ORA-27090: Message 27090 not found;product=RDBMS; facility=ORA
Linux-x86_64 Error: 4: Interrupted system call
Additional information: 3
Additional information: 128
Additional information: 65536
Wed May2 22:13:16 2012
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl2_p004_15962.trc:
ORA-27090: Message 27090 not found;product=RDBMS; facility=ORA
Linux-x86_64 Error: 4: Interrupted system call
Additional information: 3
Additional information: 128
Additional information: 65536
.
.
.
Wed May2 22:13:16 2012
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl2_p014_15995.trc:
ORA-27090: Message 27090 not found;product=RDBMS; facility=ORA
Linux-x86_64 Error: 4: Interrupted system call
Additional information: 3
Additional information: 128
Additional information: 65536
Wed May2 22:13:29 2012
SMON: Parallel transaction recovery tried

问题发生在RAC一个节点崩溃后，所有的错误都发生在并行进程PNNN上。查看了一下MOS，发现这个问题是由于系统参数配置不当所致：ORA-27090: MESSAGE 27090 NOT FOUND; [ID 579108.1]。

内核参数的值：aio-max-nr设置太低，推荐设置为fs.aio-max-nr= 3145728。修改参数使用sysctl –p重新加载参数后，重启数据库即可。