RAC: How to move a datafile that was added by mistake on local storage to shared location

(Doc ID 1678747.1)

Last updated on FEBRUARY 06, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


In Real Application Cluster (RAC) environments the datafiles need to be on the shared storage. It is possible that a datafile gets added to a tablespace on the local filesystem instead of the shared storage subsystem by mistake. 

When another instance tries to contact the local file it will error out with:

ORA-01157: cannot identify/lock data file 10
ORA-01110: data file 10: '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/DATA' 

Typically this happens when the datafile needed to be added to ASM but the '+'-sign is omited when specifying the diskgroup. In this case the datafile will be created in the default directory specified by the 'db_create_file_dest' parameter which defaults to $ORACLE_HOME/dbs.

This article explains how you can resolve this issue when the database is in archivelog mode and when the database is running in noarchivelog mode.



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