ORA-15100: invalid or missing diskgroup name

ORA-15100: invalid or missing diskgroup name

ORA-15100:

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SQL> alter diskgroup DATE mount;

alter diskgroup DATE mount

                *

ERROR at line 1:

ORA-15100: invalid or missing diskgroup name

SOLUTION:

Login into ASM and check the

select name,state from v$asm_diskgroup;

NAME                           STATE

------------------------------ -----------

DATE                           DISMOUNTED

Reason:

Because the diskgroup name DATE interpreted as date. This is the reason that the diskgroup with name DATE cannot start.

You need to start it manually as follow by using apostrophe.

alter diskgroup "DATE" mount;

NOTE: Always avoid to you such type of disk group Name.