ITPub博客

首页 > 数据库 > Oracle > How to Increase CSS Misscount in single instance ASM installations

How to Increase CSS Misscount in single instance ASM installations

Oracle 作者:Curry_0316 时间:2015-12-16 10:38:58 0 删除 编辑
文章转自MOS:
How to Increase CSS Misscount in single instance ASM installations (文档 ID 729878.1)

APPLIES TO:

Oracle Server - Enterprise Edition - Version 10.1.0.2 to 10.2.0.1 [Release 10.1 to 10.2]
Information in this document applies to any platform.
***Checked for relevance on 10-Mar-2011***


GOAL

CSS is an essential component of ASM installations as it is required to syncrohize ASM resources and ASM crashes in the absence of CSS component. 

When there is any OS resource saturation (ie, CPU, memory shortage, etc), CSS sometimes could not obtain the OS resource and thus determines there is a problem and abort itself. A solution for this issue is to add more CPU/memory resources to the server or to move resource intensive applications (grid control, etc.) and some databases to another server to consume less resources on this server.

Another workaround is to bump up the CSS misscount. This will give the OS more time to recover before css eviction. The purpose of this note is to document the steps needed to modify the CSS misscount in single instance ASM installations.

Those steps should NOT be followed for RAC installations. Please follow Note 284752.1 to see the steps needed to modify the CSS misscount in 10g RAC environment. Please also review Note 294430.1 to understand the implications before editing misscount settings.

FIX

Steps to increase CSS process miscount to 300 (5 minutes). 

1) Shut down all ASM instances and DB instances depending on ASM. 

2) Run $ORACLE_HOME/bin/localconfig delete to remove the existing CSS configuration. 

3) Edit the $ORACLE_HOME/bin/localconfig file and look for the CLSCFG invocation, it should look something like this: 

$CLSCFG -local -o $CH -l "AMERICAN_AMERICA.WE8ISO8859P1" 

At the end of the line, add trace and misscount params as follows:

#Create CSS keys only if needed to 
$CLSCFG -local -o $CH -l "AMERICAN_AMERICA.WE8ISO8859P1" -misscount 300 

4) Re-add CSS by running $ORACLE_HOME/bin/localconfig add. 

5) Restart ASM and DB instances.

REFERENCES

NOTE:284752.1 - Steps To Change CSS Misscount, Reboottime and Disktimeout
BUG:6059429 - OCSSD DAEMON CRASHES, RESULTS IN ASM AND ASM DB CRASH

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/29953799/viewspace-1873093/,如需转载,请注明出处,否则将追究法律责任。

请登录后发表评论 登录
全部评论

注册时间:2014-10-11

  • 博文量
    86
  • 访问量
    244259