CURRENT APPLICATION COMPATIBILITY special register

The data type is VARCHAR(10).

Set the value with the SET CURRENT APPLICATION COMPATIBILITY statement.

For packages, the initial value is determined by the value of the APPLCOMPAT bind option. For a user-defined functions or stored procedures, the initial value is inherited according to the rules in Special registers in a user-defined function or a stored procedure. For advanced triggers, the initial value is V12R1.

The following CURRENT APPLICATION COMPATIBILITY values are supported to specify the application compatibility behavior of dynamic SQL statements:

VvvRrMmmm

Compatibility with the behavior of the identified Db2 function level. For example, V12R1M510 specifies compatibility with the highest available Db2 12 function level. The equivalent function level or higher must be activated.

For the new capabilities that become available in each application compatibility level, see:

• SQL changes in Db2 13 application compatibility levels
• SQL changes in Db2 12 application compatibility levels

Tip: Extra program preparation steps might be required to increase the application compatibility level for applications that use data server clients or drivers to access Db2 for z/OS®. For more information, see Setting application compatibility levels for data server clients and drivers.

V12R1

Compatibility with the behavior of Db2 12 function level 500. This value has the same result as specifying V12R1M500.

V11R1

Compatibility with the behavior of Db2 11 new-function mode. After migration to Db2 12, this value has the same result as specifying V12R1M100. For more information, see V11R1 application compatibility level

V10R1

Compatibility with the behavior of DB2® 10 new-function mode. For more information, see V10R1 application compatibility level.