CSDACC

The CSDACC system initialization parameter specifies the type of access to the CICS® system definition data set (CSD) to be permitted to this CICS region.

The CSDACC system initialization parameter is effective only when you start CICS with a START=COLD system initialization parameter. If you code the START=AUTO system initialization parameter and CICS performs a warm or emergency restart, the file resource definitions for the CSD are recovered from CICS global catalog. However, you can redefine the type of access that is permitted to the CSD dynamically with the CEMT SET FILE command or the EXEC CICS SET FILE command. For information about the START system initialization parameter, see START system initialization parameter. For information about how CICS starts and stops, their implications, and the actions that are required to handle them, see Administering CICS operations.

For information about setting up the CSD, see Setting up the CICS system definition data set. For information about the CEMT SET FILE command, see CEMT SET FILE. For information about the EXEC CICS SET FILE command, see SET FILE.

A set of system initialization parameters configure the CSD. The names of all these system initialization parameters start with CSD. For example, CSDACC, CSDBKUP. To get the full list of system initialization parameters and their functions, see The system initialization parameter descriptions and summary. The system initialization parameters that are used to define the CSD are interdependent. For more details, see Defining CSD attributes.

Defining CSDACC

You can define the CSDACC system initialization parameter in the following ways:

In the PARM parameter of the EXEC PGM=DFHSIP statement.
In the SYSIN data set of the CICS startup job stream.
Through the system console.
In the DFHSIT macro.

Values for CSDACC

CSDACC={READWRITE|READONLY}

Valid values for the CSDACC system initialization parameter are as follows:

READWRITE: READWRITE is the default value for CSDACC. Read/write access is allowed, permitting the full range of CEDA, CEDB, and CEDC functions to be used.
READONLY: Read only access is allowed, limiting the CEDA and CEDB transactions to only those functions that do not require write access.