如何处理HANG住的DB

如何处理HANG住的DB 1. 生成 systemstate dump:SQLgt;sqlplus -prelim / as sysdbaSQLgt; alter session set max_dump_file_si

首页 → 数据库技术

背景：

如何处理HANG住的DB

[日期：2013-12-12] 来源：Linux社区 作者：zhou1862324 [字体：]

如何处理HANG住的DB

1. 生成 systemstate dump:
SQL>sqlplus -prelim / as sysdba
SQL> alter session set max_dump_file_size = unlimited;
SQL> alter session set events 'immediate trace name systemstate level 10';
Wait for some 30 seconds
SQL> alter session set events 'immediate trace name systemstate level 10';
Wait for some 30 seconds
SQL> alter session set events 'immediate trace name systemstate level 10;

2. 开一个新的SESSION:
SQL>sqlplus -prelim / as sysdba
SQL>oradebug setmypid
SQL>oradebug unlimit;
SQL>oradebug dump hanganalyze 3
Wait for 30 seconds
SQL>oradebug dump hanganalyze 3
Wait for 30 seconds
SQL>oradebug dump hanganalyze 3

对生成的文件进行分析。

附：system state dump when connection to the instance is not possible
There are several ways of getting more information when connection to an instance is not possible by sqlplus. It is useful to collect as much information about a hang before clearing the instance.

1.) Using OS debuggers like dbx or gdb.
For example:
$ps -ef |grep $Oracle_SID ## Use PID of any User Process instead of BG Process
$gdb $ORACLE_HOME/bin/oracle
print ksudss(10)
The systemstate dump will be in the bdump or udump depending on the PID chosen
2.) Using the new 10.1 sqlplus -prelim option.
For example:
export ORACLE_SID=PROD ## Replace PROD with the SID you want to trace
sqlplus -prelim / as sysdba
oradebug setmypid
oradebug unlimit;
oradebug dump systemstate 10
3.) Finally if either option (1) or (2) is not doable, please remember to take stacks of all the Oracle Background process using pstack or gdb
For example:
script stack.log
pstack
pstack
4.) Finally you may also want to collect some truss, tusc or strace of sqlplus
Note: The recommended systemstate level for 10g is 266

VIP不能正常启动，报错CRS-1006

GoldenGate疑似BUG：info all查看不到extract

相关资讯 HANG住

图片资讯

本文评论 　　查看全部评论 (0)

评论声明

最新资讯

本周热门

Linux公社简介 - 广告服务 - 网站地图 - 帮助信息 - 联系我们
本站（LinuxIDC）所刊载文章不代表同意其说法或描述，仅为提供更多信息，也不构成任何建议。

Copyright © 2006-2011　Linux公社　All rights reserved 浙ICP备06018118号