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programs use CICS macros, which is very useful when you must determine your
scope-of-effort.
The CICS Application Migration Aid (5695-061), should be used to assist
customers migrating macro-level programs to command-level programs. Please
review the manual
CICS/VSE Application Migration Aid Guide V2
, SC33-1901 for
more detail.
COBOL and CICS Command Level Conversion Aid for VSE (CCCA) - CCCA
assists in the removal of BLL cell processing to ANSI 85 COBOL processing
(5785-CCC). Please review the manual
CCCA/VSE Installation and User
′
s Guide
,
SC26-8269 for more details.
During the planning and/or application conversion process you may find it
difficult to convert your macro programs. You may find other aids to help you
with the conversion and/or consider the coexistence of CICS/VSE and CICS TS
systems.
6.1.13 CICS/VSE and TS Coexistence Considerations
As part of the migration you may need to consider the coexistence of a
CICS/VSE system with a CICS TS system via an ISC connection. The reasons for
this may vary from parallel testing, migrating of data, to function shipping
requirements for DL/I and so on. Still, you should understand functions that will
help the cooperative systems.
If you allow the send and receive prefixes to default, CICS creates the last three
characters of the session names from the alphanumeric characters A through Z,
and 1 through 9. These three-character identifiers begin with the letters AAA,
and continue in ascending sequence until the number of session entries reaches
the limit set by the SEND- or RECEIVECOUNT value. This method is the same as
that for APPC sessions.
To maintain compatibility with earlier releases, this change is optional. You can
continue to define your own prefixes for the send and receive sessions, in which
case CICS generates the terminal control table entries (TCTTEs) for session
names in the same way as for earlier releases.
Please review the
CICS Intercommunication Guide
, SC33-1698 which provides
definitions and guidelines for intersystems connections.
6.1.14 Testing and Problem Determination Considerations
You should consider that due to the change in operating systems and CICS′s
preparation, education and training should be completed before your installation
and test begin. However, here are few items to consider with the process.
There are major differences in:
•
initialization messages.
•
system initialization parameters.
•
initialization error recovery.
•
messages and codes issued by different systems, and in the operator actions
they require.
•
handling output from CICS monitoring.
Chapter 6. CICS 153