CURRENT CLIENT_APPLNAME special register

The CURRENT CLIENT_APPLNAME (or CLIENT APPLNAME) special register contains the value of the application name from the client information specified for this connection.

The data type of the register is VARCHAR(255). The default value of this register is an empty string.

The value of the application name can be changed by using the sqleseti API or the wlm_set_client_info procedure.

Note that the value provided via the sqleseti API is in the application code page, and the special register value is stored in the database code page. Depending on the data values used when setting the client information, truncation of the data value stored in the special register may occur during code page conversion.

A client sends the default client information register values to the Db2® for z/OS® server when they are not explicitly set by the user. The default CURRENT CLIENT_APPLNAME special register value is the current process name. The sqleqryi API can return the default value only when the enableDefaultClientInfo keyword is set to True in the IBM® data server driver configuration file.

Example: Select which departments are allowed to use the application being used in this connection.

   SELECT DEPT
     FROM DEPT_APPL_MAP
     WHERE APPL_NAME = CURRENT CLIENT_APPLNAME