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Status Planned for future release
Workspace Db2
Created by Guest
Created on Aug 6, 2015

use of SET CURRENT APPLICATION COMPATIBILITY for ONLINECHECK in db2sqljcustomize command

The SQLJ Profile Customizer command db2sqljcustomize (described in the DB2 11 for z/OS Application Programming Guide and Reference for Java) with the options -onlinecheck YES and -genDBRM is used to create a DB2 z/OS DBRM for a SQLJ Java program. The SQL in the SQLJ program is static.

The db2sqljcustomize command (in the IBM data server driver for JDBC and SQLJ) execute the onlinecheck step of the command with dynamic SQL in driver supplied package NULLID.SYSLH200. Maybe other NULLID packages are also involved in some cases.

In the actual implementation of the onlinecheck step there is no dynamic SET CURRENT APPLICATION COMPATIBILITY done before checking the SQL of the SQLJ program. Result is, that the value of APPLCOMPAT parameter of the package NULLID.SYSLH200 on DB2 for z/OS is used for onlinecheck of the SQL in the SQLJ program.
This is not transparent for SQLJ programmers and the same value is used within the onlinecheck for all SQLJ programs.
The onlinecheck step should execute a SET CURRENT APPLICATION COMPATIBILITY statement before onlinechecking. The onlinecheck step would be independent of the bind parameter of the NULLID.SYSLH200 package in the DB2 for z/OS. In addition the SQLJ programmer would get the chance to control the APPLCOMPAT value for her/his specific SQLJ program.
There are some imaginable possibilities for the value (actual V11R1 or V10R1) of the SET CURRENT APPLICATION COMPATIBILITY command. A) It could be extracted from the bind parameters, which are specified in the db2sqljcustomize command option “-bindoptions”. B) Or it could be extracted from the recently provided db2sqljcustomize option “-APPLCOMPAT” C) Or it could be extracted from a new db2sqljcustomize option. D) or other…