SQL1402N Unable to authenticate user due to unexpected system
error.

Explanation:

Call your system administrator. On unix-based systems, the file
db2ckpw may not have the correct permission bits set, or the
system may have run out of swap/paging space. On Windows NT, the
DB2 security service may not have been started or the account may
be locked.

The command can not be processed.

Federated system users: this situation can also be detected by
the data source.

User Response:

On unix-based systems, have the system administrator ensure the
correct access permissions are set for db2ckpw , and that there
is enough swap/paging space allocated. On Windows NT, have the
system administrator verify that the DB2 security service is
installed and started. If the service is running then ensure that
the account is not locked.

Anton Versteeg

DB2 & UDB email list listserv db2-l LazyDBA home page