CEDF, CEDG, CEDX, and CEDY - CICS execution diagnostic facility

The CICS® execution diagnostic facility (EDF) provides four transactions that you can use for testing application programs. These transactions enable you to test application programs interactively without having to supply special program testing procedures.

CEDF: Use CEDF to invoke EDF for testing application programs that are associated with user transactions initiated from a terminal.
CEDG: Use CEDG to access functions of CEDF in a read-only mode.
CEDX: Use CEDX to invoke EDF for testing application programs that are associated with non-terminal transactions.
CEDY: Use CEDY to access functions of CEDX in a read-only mode.

About the read-only forms

Transactions CEDG and CEDY are read-only forms of CEDF and CEDX. They give you access to some functions of CEDF and CEDX. The command syntax to invoke CEDG is the same as for CEDF, and the command syntax to invoke CEDY is the same as for CEDX.

The following functions are not available in CEDG and CEDY:

Abending the transaction
Invocation of the CEBR transaction
Invocation of the CECI transaction
Modification of the EIB control block
Modification of the working storage
Modifying or NOOPing the command that is being executed

For functions that are disallowed in CEDG and CEDY, CICS displays a message indicating that the function is not allowed because EDF is operating in a read-only mode.

Prerequisites

You must ensure that the EDF resource definitions are installed. These resource definitions are provided in the IBM®-supplied group, DFHEDF. For information about installing the resource definitions, see Resource definition installation.

You must also ensure that the terminal from which you run EDF is in transceive (ATI/TTI) status.