Client User Attribute ClientUser (CU) Purpose The user ID to be stored in the database. This option sets the CURRENT CLIENT_USERID register (DB2 for Linux/UNIX/Windows) and CLIENT USERID register (DB2 for z/OS) in the database. This value is used by the DB2 Workload Manager. Valid Values -1 | client_userid where: client_userid is a valid user ID. Behavior When set to -1, the driver uses the userid of the user that is currently logged onto the client. Default None GUI Tab Figure 11 See also Performance Considerations Notes • This connection option can affect performance.