Monthly Archives: August 2010

/usr/sbin/clustat Could not connect to CMAN: Permission denied – Bug

non-root user ran /usr/sbin/clustat and aborted with message "Could not connect to CMAN: Permission denied". It was identified this behavior came from RHEL 5 cluster bug in rgmanager version lower than 3.0.7.   Bug 531273 (URL: https://bugzilla.redhat.com/show_bug.cgi?id=531273) $ ls -al /usr/sbin/clustat-rwxr-xr-x 1 root root … Continue reading

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analyze cluster.conf by xmllint + xpath

Well, this time I need to verify Oracle cluster service in our Linux servers. As I always do, I created automation script to analyze /etc/cluster/cluster.conf.   It is a XML file, so it is natural I go through xmllint command … Continue reading

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SSH passwordless login under LINUX Cluster

How can enable SSH passwordless login for my n nodes in Linux Cluster? Yes.   Put virtual host and/or IP in source server!   for example. Oracle account in server A need to access target server B1, B2 in cluster. And B1 … Continue reading

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let Oracle automatically purge archivelogs in standby database

Well, purge up archivelog is always a part of DBA duties, and very import in space management.  However, Oracle dos provide capacity which help us to purge archivelogs in standby database automatically.   It requires 2 things: 1) flash recovery … Continue reading

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what is the cost of data security – up to 1Million

Found a interesting document talking about the real cost of data security fine. It is up to 1 million and 20 years jail . You can easily find it by google, of course.

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can’t start report server in opmn – what to look up

The report server registered in OPMN can’t start and left nothing in $ORACLE_HOME/opmn/logs, why it failed? 1 possibility is report server name conflict. It indicates another report server in the same name is up and running on the same newtwork, plus report … Continue reading

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