00C90063

Explanation
 On a READS request for IFCID 306, log records are returned,
but data is not decompressed as requested.

Problem determination
 See the reason code in field QW0306DG to determine
why decompression was not performed. For example, if you receive 00C90064,
it means that  the decompression dictionary changed since the log record was
written.  
 If you suspect an error in DB2®, you might need to report the problem. For information about identifying and reporting the
problem, see Collecting diagnostic data.