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

Error constant SQLE_CORRUPT_REDO_OR_MIRROR
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.
Severity 11
SQLCODE -1009
SQLSTATE 08W73
Sybase error code 840
 Probable cause
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