Tag Archives: ORA-15055

ORA-15055: unable to connect to ASM instance

oracle

ORA-15055: unable to connect to ASM instance
Cause: When accessing a diskgroup for the first time, the database was unable to connect to the required ASM instance.
Action: Check the additional error messages. May need to configure correct ASM sid or make sure the database instance has OS privileges for ASM SYSDBA.

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