ORA-15078 ASM diskgroup was forcibly dismounted
This is an Oracle Database Server Message. This can be generated by the Oracle Database when running any Oracle program.
What is the cause of ORA-15078 from Oracle 11g ?
The diskgroup to which the I/O request was issued was forcibly dismounted (with the ALTER DISKGROUP DISMOUNT FORCE command) so that it could not be accessed.
How to deal with ORA-15078 from Oracle 11g ?
Mount the diskgroup to allow access again.
Contacting Oracle support services ?
Some messages recommend contacting Oracle Support Services to report a problem. Please go here for more information : Oracle Support.
Linked Error Messages
- ORA-15070 maximum number of files string exceeded in diskgroup " string "
- ORA-15071 ASM disk " string " is already being dropped
- ORA-15072 command requires at least string failure groups, discovered only string
- ORA-15073 diskgroup string is mounted by another ASM instance
- ORA-15074 diskgroup string requires rebalance completion
- ORA-15075 disk(s) are not visible cluster-wide
- ORA-15076 Emulating I/O errors on the OSM disk
- ORA-15077 could not locate ASM instance serving a required diskgroup
- ORA-15079 ASM file is closed
- ORA-15080 synchronous I/O operation to a disk failed
- ORA-15081 failed to submit an I/O operation to a disk
- ORA-15082 ASM failed to communicate with database instance
- ORA-15083 failed to communicate with ASMB background process
- ORA-15084 ASM disk " string " is offline and cannot be dropped.