Open Transaction Environment › Migrating to OTE

Migrating to OTE

A user application does not necessarily need to be threadsafe to install CA Datacom CICS Services Version 14.0. That includes selection of the option OPENAPI=YES in the DBCVTPR macro to force the CA Datacom CICS Services to commence execution on open TCBs. However, if you want more information about the migration process for an application to become threadsafe, the following checklist shoud be considered as an initial road map for that effort:

• Make all the programs RENT including replacement of the entire standard embedded macros with LIST and Executable macros.
• Identify all the shared resources (storage). Sharing a resource between two or more programs makes the application non-threadsafe unless the sharing process is serialized.
• Use serialization techniques (ENQ/DEQ, CS/CDS/CSG...) to make programs threadsafe. Verify that all the programs sharing a resource use the same serialization technique or the application may not be threadsafe.
• Define the Concurrency=threadsafe on the intended programs in CSD.
• Define the API(OPENAPI) or API(CICSAPI) for every program in CSD as appropriate.