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.

Tag Service indicates external changes introduced by service APARs.

Table 1. Highlights of SIT changes across supported CICS TS releases
5.5	5.6	6.1	6.2
NEW: KERBEROSUSER	NEW: None	NEW: EPCDSASZE EPUDSASZE MAXTLSLEVEL PCDSASZE PUDSASZE RESOVERRIDES SDTMEMLIMIT	NEW: CERTEXPIRYWARN INTRDRJOBUSER ZOSMONINTERVAL ZOSSOSNEWTCB ZOSSOS24UNALLOC ZOSSOS31UNALLOC ZOSSOS64UNALLOC
CHANGED: GMTRAN GNTRAN HPO MINTLSLEVEL PLTPI PLTSD USSHOME	CHANGED: CMDSEC CONFDATA CPSMCONN Service DUMP DUMPSW GMTRAN KEYRING Service TRTABSZ TRTRANSZ	CHANGED: CPSMCONN DTRPGM KEYRING Service MINTLSLEVEL	CHANGED: KEYRING RACFSYNC TRTABSZ XPPT
DEPRECATED: None	DEPRECATED: None	DEPRECATED: None	DEPRECATED: None
REMOVED: None	REMOVED: None	REMOVED: ENCRYPTION	REMOVED: None

Changes to SIT parameters by release of CICS TS

View changes by parameter:

CMDSEC

Reference information: CMDSEC

5.5	5.6	6.1	6.2
	CHANGED: The ALWAYS option no longer affects category 3 transactions.

CONFDATA

Reference information: CONFDATA

5.5	5.6	6.1	6.2
	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.

CPSMCONN

Reference information: CPSMCONN

5.5	5.6	6.1	6.2
	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.

DTRPGM

Reference information: DTRPGM

5.5	5.6	6.1	6.2
		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.

DUMP

Reference information: DUMP

5.5	5.6	6.1	6.2
	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.

DUMPSW

Reference information: DUMPSW

5.5	5.6	6.1	6.2
	NEW OPTION: ALL Allows continuous switching between the two transaction dump data sets DFHDMPA and DFHDMPB.

GMTRAN

Reference information: GMTRAN

5.5	5.6	6.1	6.2
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.

GNTRAN

Reference information: GNTRAN

5.5	5.6	6.1	6.2
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.

HPO

Reference information: HPO

5.5	5.6	6.1	6.2
CHANGED: HPO can now be specified in the PARM parameter on an `EXEC PGM=DFHSIP` statement or in the SYSIN data set.

KERBEROSUSER

Reference information: KERBEROSUSER

5.5	5.6	6.1	6.2
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.

5.5

5.6

6.1

6.2

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.

KEYRING

Reference information: KEYRING

5.5	5.6	6.1	6.2
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.	CHANGED: Accepts more formats of key ring names to allow use of key rings that are not owned by the region user ID.

MAXTLSLEVEL

Reference information: MAXTLSLEVEL

5.5	5.6	6.1	6.2
		NEW

MINTLSLEVEL

Reference information: MINTLSLEVEL

5.5	5.6	6.1	6.2
CHANGED: Default value changed from TLS10 to TLS12.		NEW OPTION: TLS13 STABILIZED OPTION: TLS11 REMOVED OPTIONS: TLS10 TLS10ONLY

PLTPI

Reference information: PLTPI

5.5	5.6	6.1	6.2
CHANGED: Allows specification of the full name of a program list table as an alternative to a suffix.

PLTSD

Reference information: PLTSD

5.5	5.6	6.1	6.2
CHANGED: Allows specification of the full name of a program list table as an alternative to a suffix.

RACFSYNC

Reference information: RACFSYNC

5.5	5.6	6.1	6.2
			NEW OPTION: CPSM

TRTABSZ

Reference information: TRTABSZ

5.5	5.6	6.1	6.2
	CHANGED: Minimum changed to 1024 KB.		CHANGED: Minimum changed to 12288 KB (12 MB).

TRTRANSZ

Reference information: TRTRANSZ

5.5	5.6	6.1	6.2
	CHANGED: Minimum changed to 1024 KB.

USSHOME

Reference information: USSHOME

5.5	5.6	6.1	6.2
REMOVED OPTION: NONE

XPPT

Reference information: XPPT

5.5	5.6	6.1	6.2
			NEW OPTIONS: ALL DPLONLY