ORA-27086:unable to lock file – already in use
Cause:the file is locked by another process, indicating that it is currently in use by a database instance.
Action:determine which database instance legitimately owns this file.
If you check the above Picture you will there’s two Pmon process for the same instance, So what you do is the follwing
sqlplus / as sysdba
After shutdown database another process still up use kill -9 OS command to kill it and startup database.
Published by Osama Mustafa
Osama considered as one of the leaders in Cloud technology, DevOps and database in the Middle-East. I have more than ten years of experience within the industry. moreover, certfied 4x AWS , 4x Azure and 6x OCI, have also obtained database certifications for multiple providers.
In addition to having experience with Oracle database and Oracle products, such as middle-ware, OID, OAM and OIM, I have gained substantial knowledge with different databases.
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2 thoughts on “ora-27086 unable to lock file / Alertlog”
I found so many interesting stuff in your blog especially its discussion. Serrurier d'Evry
if you are experiencing nfs locks on the NetApp storage use the following linkhttps://wordpress.com/post/ora01157ora01110ora27086aftercrashpreventsdatabase.wordpress.com/17