Sunday, April 21, 2013

ORA-00218 Block Size String of Control File 'string' does not match DB_BLOCK_SIZE

Error Code
ORA-00218

Description
Block size string of control file 'string' does not match DB_BLOCK_SIZE (string)

Cause
Possible cause of this error is, the block size as stored in the control file header is different from the value of the initialization parameter DB_BLOCK_SIZE. This might be due to an incorrect setting of DB_BLOCK_SIZE, or else might indicate that the control file has either been corrupted or belongs to a different database.

Action
To fix this issue, restore a good copy of the control file. If the control file is known to be clean set the DB_BLOCK_SIZE to match control file headers block size value.

reference

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