Changed system initialization parameters

Table 2 shows those system initialization parameters that have changed in some way.

Table 2. Changed system initialization parameters
Keywords Operands Explanation
EDSALIM {30M|number} The default value is now 30M
ENCRYPTION {STRONG |WEAK |MEDIUM} Specifies the cipher suites that CICS® uses for secure TCP/IP connections. For compatibility with previous releases, ENCRYPTION=NORMAL is accepted as an equivalent to ENCRYPTION=MEDIUM.

For more information, see the CICS System Definition Guide.

LGDFINT {5|number} The default value is changed from 30 milliseconds to 5.
MAXJVMTCBS {5|number} specifies the maximum number of open TCBs that CICS can create in the pool of J8- and J9-mode TCBs for use by Java™ programs that run in a JVM (the JVM pool). Within this limit, there are no constraints on how many of the TCBs in the JVM pool are J9 TCBs, and how many are J8 TCBs.

For more information, see the CICS System Definition Guide.

MAXOPENTCBS {12|number} In earlier releases, this parameter applies to all open mode TCBs controlled by the CICS dispatcher domain. The range is changed to 12 through 2000, and it now applies to L8 mode open TCBs only, which are reserved for use by task-related user exits that are enabled with the OPENAPI option.. This includes the CICS DB2® adaptor when CICS connects to DB2 Version 6 or later .

See also the new system initialization parameters, MAXHPTCBS and MAXJVMTCBS.

MNFREQ {0|hhmmss} The minimum value time value you can specify is reduced from 15 minutes to one minute, giving a range of 000100-240000 (instead of 001500-240000).
SPCTRxx (Unchanged) New domain codes are available for the xx codes in the keyword. The operands are unchanged. The new codes are:
EJ
Enterprise Java domain
IE
ECI over TCP/IP domain
II
IIOP domain
OT
Object transaction services domain
PT
Partner management domain
RZ
Request streams domain
SJ
JVM domain

see further information in the entry for ***

STNTRxx (Unchanged) See the entry for *** for details of new domain codes, and see additional information in the entry for ***

STNTR, STNTRxx, SPCTR and SPCTRxx {level numbers} The SJ component (JVM domain) now has trace levels 29-32, that are reserved to indicate the JVM trace levels 0, 1, and 2, plus a user-definable JVM trace level. You are recommended to use only the SPCTRSJ system initialization parameter to activate JVM tracing, so that it is only activated for special transactions. Selecting tracing levels 29, 30, 31, 32 or ALL for standard tracing for the JVM domain (SJ) component (using the STNTR or STNTRSJ system initialization parameters) is not recommended, because JVM trace can produce a large amount of output.

For more information, see the CICS System Definition Guide.

For more information on the changed parameters, see the CICS System Definition Guide.

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