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ORA-15029: disk "string" is already mounted by this instance tips

Oracle Error Tips by Burleson Consulting


The Oracle docs note this on the ora-15029 error:

      ORA-15029: disk "string" is already mounted by this instance
Cause: An attempt was made to add to a diskgroup a disk that was already mounted by the current instance as part of some (possibly other) diskgroup.

Specify a different disk in the command. Note that not even the FORCE option can be used to correct the situation until the diskgroup containing the disk becomes dismounted by this instance.

Bug #3265676 MAY create problems with this:

"Before rebalancing of a diskgroup activated by a drop disk command finished, an add disk command will stop the original rebalance pre-maturely even though the 2nd command failed with an expected ora-15029."



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