db_init has not been called or the call to db_init failed

Error constant SQLE_DB_INIT_NOT_CALLED
ODBC 2 State ERROR
ODBC 3 State ERROR
Severity 16
SQLCODE –739
SQLSTATE 55W07
Sybase error code 13752
Probable cause

The SQLCA passed to a dblib entry point has not been initialized by a call to db_init or the call to db_init failed.