Home Database Mysql Tutorial ORA-27300,ORA-27301,ORA-27302

ORA-27300,ORA-27301,ORA-27302

Jun 07, 2016 pm 05:36 PM

运维工程师在一台IBM P750(AIX6.1)上部署了一套oracle(未建库),让我把商用的某库同其做一个DG容灾。我按正常步骤部署了DG。

运维工程师在一台IBM P750(AIX6.1)上部署了一套Oracle(未建库),让我把商用的某库同其做一个DG容灾。我按正常步骤部署了DG。

1.在备库开始日志恢复

alter database recover managed standby database using current logfile disconnect;

2.查看备库是否正常接收日志

select process,client_process,sequence#,status from v$managed_standby;

--正常接收日志

3.查看备库是否正常应用日志

select THREAD#,SEQUENCE#,ARCHIVED,APPLIED,DELETED,STATUS from v$archived_log order by 1,2;

--正常应用日志

但是我在备库的alert日志里发现有如下报错

Mon Mar 24 14:11:14 2014

Process startup failed, error stack:

Errors in file /apps/oracle/diag/rdbms/primary/egap/trace/egap_psp0_18481392.trc:

ORA-27300: OS system dependent operation:fork failed with status: 2

ORA-27301: OS failure message: No such file or directory

ORA-27302: failure occurred at: skgpspawn5

Process PR0S died, see its trace file

后来发现是参数maxuproc不足导致,该参数默认只有128,,该参数决定了每个操作系统用户允许连接的最大进程数,该参数不足时alert日志中会报如上错误。

正常在装rac时这些参数我们都会提前检查,并设为oracle要求的值(要求值为16384),这里可能是运维根本没有检查该参数

检查该参数

lsattr -E -l sys0 -a maxuproc

root@egisbdb1:/#lsattr -E -l sys0 -a maxuproc

maxuproc 128 Maximum number of PROCESSES allowed per user True

修改该参数

chdev -l sys0 -a maxuproc=16384

修改后alert日志中不再报该错误

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