Verifying the IBM DB2 Client for a Siebel Upgrade
Environments: Development, Test and Production.
Databases: IBM DB2 UDB only.
The Siebel Server supports only the 32-bit IBM DB2 client. Verify that you have not installed the 64-bit IBM DB2 client on the Siebel Servers. If you have installed the 64-bit IBM DB2 client, then replace it with the 32-bit client.
IBM supports the 32-bit IBM DB2 client working with 64-bit IBM DB2 databases.