AMD2 is the default name of the CICS transaction in the DB2 UDB Option for CICS that allows clients to submit SQL statements to DB2 UDB requests. For IMS, the default name is SYRT.
A separate installed CICS or IMS region with the DB2
UDB Option is required for each DB2 subsystem accessed.
The DirectConnect for z/OS Option invokes AMD2 (for CICS) or SYRT (for IMS) when it sends a client SQL request to the mainframe. Then, AMD2 or SYRT submits the SQL request to DB2 UDB, using the DB2 dynamic SQL facility.
AMD2 or SYRT returns DB2 results and messages to the DirectConnect server and then terminates.
For CICS only, in the case of long transactions or an allocation on connect setting, AMD2 terminates only after the client explicitly ends the transaction.
