Different IBM relational database products do not always produce the same SQLCODEs for similar errors. You can handle this problem in either of two ways:
SQLSTATEs have approximately the same meaning across the database products, and the products produce SQLSTATEs that correspond to the SQLCODEs.
By default, DB2 Connect maps SQLCODEs and tokens from each IBM host or AS/400 server system to your DB2 Universal Database system. You can specify your own SQLCODE mapping file if you want to override the default mapping or you are using a database server that does not have SQLCODE mapping (a non-IBM database server). You can also turn off SQLCODE mapping.