Unable to start specified database: The transaction log '%1' or its mirror '%2' is invalid

Item Value
SQLCODE -1009
Constant SQLE_CORRUPT_REDO_OR_MIRROR
SQLSTATE 08W73
Sybase error code 840
ODBC 2 State 08001
ODBC 3 State 08001
Parameter 1 The name of the transaction log file.
Parameter 2 The name of the transaction log mirror file.

Probable cause 

The transaction log differs from the transaction log mirror. Either the transaction log or its mirror is invalid.