Code page information

When using the application programming interfaces of the CICS® Transaction Gateway or CICS Universal Client to invoke CICS programs, data conversion is an important consideration.

If the code page of the user application is different from the code page of the CICS server, or the byte order of binary data is in a different format, you might need to convert the data in a COMMAREA Start of changeor containerEnd of change. You can do this conversion by making use of CICS supplied data conversion capabilities on the CICS server, provided by the DFHCCNV program and controlled by the DFHCNV macro definitions. In this case all data conversion is performed on the CICS server. Alternatively, you can make use of data marshalling utilities provided within your user application development environment.

If you are using Java™ you can determine the code page of the Client daemon from the user application. For more information about this utility refer to the Javadoc supplied with the product.