Changes to SIT parameters

This section summarizes the changes to the system initialization parameters across supported CICS® TS releases.

If you are upgrading from an end-of-service release, you can find information about the changes that are relevant to those releases in Summary of changes from end-of-service releases.

Highlights of changes across supported releases of CICS TS

Table 1 lists new, changed, deprecated or removed SIT parameters in each supported CICS TS release.

The links provided for new parameters take you to their reference information in the product documentation.

The links, if provided, for changed, deprecated, or removed parameters take you to the relevant tables below where brief descriptions of the changes are provided.

Table 1. Highlights of SIT changes across supported CICS TS releases
5.4 5.5 5.6 6.1
NEW:
NEW with APAR:
NEW: NEW:

None

NEW:
CHANGED: CHANGED: CHANGED with APAR: CHANGED: CHANGED with APAR: CHANGED: CHANGED with APAR:
DEPRECATED:

None

DEPRECATED:

None

DEPRECATED:

None

DEPRECATED:

None

REMOVED: REMOVED:

None

REMOVED:

None

REMOVED:
  • ENCRYPTION

Changes to SIT parameters by release of CICS TS

View changes by parameter:

CMDSEC
Table 2. Changes to CMDSEC by release
5.4 5.5 5.6 6.1
    CHANGED:

The ALWAYS option no longer affects category 3 transactions.

 
CONFDATA
Table 3. Changes to CONFDATA by release
5.4 5.5 5.6 6.1
    CHANGED:

The default is changed to HIDE. The HIDE option replaces HIDETC, which means that all transport data is subject to CONFDATA. If the deprecated CONFDATA=HIDETC is specified in the SIT or in an override, CONFDATA=HIDE is assumed, and no message will be issued.

 

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CPSMCONN
Table 4. Changes to CPSMCONN by release
5.4 5.5 5.6 6.1
    CHANGED with APAR:

New option SMSSJ initializes a single CICS region that is not part of a CICSplex as a CICS System Management Single Server (SMSS) and automatically creates a Liberty JVM server named EYUCMCIJ as the CMCI JVM server of the region.

NEW OPTION: SMSSJ

CPSMCONN=SMSSJ initializes a single CICS region that is not part of a CICSplex as a CICS System Management Single Server (SMSS) and automatically creates a Liberty JVM server named EYUCMCIJ as the CMCI JVM server of the region.

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DTRPGM
Table 5. Changes to DTRPGM by release
5.4 5.5 5.6 6.1
      CHANGED:

When DTRPGM=NONE is specified, no routing program is invoked. If you are using a routing program with the name of NONE, you must rename the program and change the DTRPGM setting accordingly.

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DUMP
Table 6. Changes to DUMP by release
5.4 5.5 5.6 6.1
    NEW OPTION: TABLEONLY

Allows suppression of system dumps except for those that have an entry in the dump table that allow sdumps to be taken.

 

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DUMPSW
Table 7. Changes to DUMPSW by release
5.4 5.5 5.6 6.1
    NEW OPTION: ALL

Allows continuous switching between the two transaction dump data sets DFHDMPA and DFHDMPB.

 
EDSALIM
Table 8. Changes to EDSALIM by release
5.4 5.5 5.6 6.1
CHANGED:

Minimum is changed to 64 MB.

     

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GMTRAN
Table 9. Changes to GMTRAN by release
5.4 5.5 5.6 6.1
  NEW OPTIONS: EXIT or DISCONNECT

Controls terminal disconnection by using PF3 or PF15 for CESN or CESL.

CHANGED:

The DISCONNECT option is extended to the CICS-supplied sign-off transaction CESF, forcing the terminal session to be disconnected upon sign-off.

 

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GNTRAN
Table 10. Changes to GNTRAN by release
5.4 5.5 5.6 6.1
  NEW OPTIONS: KEEP and DISCARD

Specifies whether to keep a pseudo-conversation in use at a terminal that is the subject of a timeout sign-off.

   

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HPO
Table 11. Changes to HPO by release
5.4 5.5 5.6 6.1
  CHANGED:

HPO can now be specified in the PARM parameter on an EXEC PGM=DFHSIP statement or in the SYSIN data set.

   

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ICVR
Table 12. Changes to ICVR by release
5.4 5.5 5.6 6.1
CHANGED:
  • Lower limit changed to 250
  • Default value changed to 2000
  • Sample table DFHSIT6$ changed to specify ICVR=5000 instead of 20000
     

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KERBEROSUSER
Table 13. Changes to KERBEROSUSER by release
5.4 5.5 5.6 6.1
NEW with APAR:

The default is the region user ID.

NEW:

Specifies the user ID associated with the Kerberos service principal for the CICS region.

MADE OPTIONAL

If this parameter is not specified, Kerberos is not supported.

   

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KEYRING
Table 14. Changes to KEYRING by release
5.4 5.5 5.6 6.1
  CHANGED with APAR PH49253:

Accepts more formats of key ring names to allow use of key rings that are not owned by the region user ID.

CHANGED with APAR PH49253:

Accepts more formats of key ring names to allow use of key rings that are not owned by the region user ID.

CHANGED with APAR PH49261:

Accepts more formats of key ring names to allow use of key rings that are not owned by the region user ID.

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MAXOPENTCBS
Table 15. Changes to MAXOPENTCBS by release
5.4 5.5 5.6 6.1
CHANGED:

The minimum value is changed to 32.

     

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MAXSSLTCBS
Table 16. Changes to MAXSSLTCBS by release
5.4 5.5 5.6 6.1
CHANGED:
  • Default value changed from 8 to 32.
  • Sample table DFHSIT6$ changed to specify MAXSSLTCBS=32 instead of 8.
     

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MINTLSLEVEL
Table 17. Changes to MINTLSLEVEL by release
5.4 5.5 5.6 6.1
NEW OPTION: TLS10ONLY CHANGED:

Default value changed from TLS10 to TLS12.

  NEW OPTION: TLS13

STABLIZED OPTION: TLS11

REMOVED OPTIONS:
  • TLS10
  • TLS10ONLY

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PLTPI
Table 18. Changes to PLTPI by release
5.4 5.5 5.6 6.1
  CHANGED:

Allows specification of the full name of a program list table as an alternative to a suffix.

   

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PLTSD
Table 19. Changes to PLTSD by release
5.4 5.5 5.6 6.1
  CHANGED:

Allows specification of the full name of a program list table as an alternative to a suffix.

   

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RACFSYNC
Table 20. Changes to RACFSYNC by release
5.4 5.5 5.6 6.1
REMOVED OPTION: RACFDB2SYNC

Its functionality is included when RACFSYNC=YES is specified.

     

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SECVFYFREQ
Table 21. Changes to SECVFYFREQ by release
5.4 5.5 5.6 6.1
REMOVED
Note: CICS updates the last used time once a day for each user ID that is used on a CICS region.
     

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TCPIP
Table 22. Changes to TCPIP by release
5.4 5.5 5.6 6.1
CHANGED:
  • Default value changed from NO to YES.
  • Sample table DFHSIT6$ changed to specify TCPIP=YES instead of NO.
     

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TRTABSZ
Table 23. Changes to TRTABSZ by release
5.4 5.5 5.6 6.1
    CHANGED:

Minimum changed to 1024 KB.

 

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TRTRANSZ
Table 24. Changes to TRTRANSZ by release
5.4 5.5 5.6 6.1
    CHANGED:

Minimum changed to 1024 KB.

 

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USSHOME
Table 25. Changes to USSHOME by release
5.4 5.5 5.6 6.1
  REMOVED OPTION: NONE    

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