You can dynamically activate the new sysplex couple datasets without shutting any system down.

SETXCF COUPLE,ACOUPLE=SYS1.TOPLX1C.XCFCDS71,TYPE=SYSPLEX
SETXCF COUPLE,PSWITCH,TYPE=SYSPLEX
SETXCF COUPLE,ACOUPLE=SYS1.TOPLX1C.XCFCDS72,TYPE=SYSPLEX

And you're done. Don't forget to change COUPLExx to reflect the new dataset names.

Mark Jacobs

On 01/03/14 14:01, Fred Kaptein wrote:
Hello,

I have a question on switching XCF data sets.

We currently have  5 systems in a SYSPLEX. We are looking to add more.
Our current XCF data sets were defined to hold 5 systems, using the following 
definitions:

//STEP1    EXEC PGM=IXCL1DSU
//SYSPRINT DD   SYSOUT=*
//SYSIN    DD   *
    DEFINEDS SYSPLEX(TOPLX1C)
          DSN(SYS1.TOPLX1C.XCFCDS71) VOLSER(T1CX01)
          MAXSYSTEM(5)
          CATALOG
      DATA TYPE(SYSPLEX)
           ITEM NAME(GROUP) NUMBER(60)
           ITEM NAME(MEMBER) NUMBER(50)
           ITEM NAME(GRS) NUMBER(1)
    DEFINEDS SYSPLEX(TOPLX1C)
          DSN(SYS1.TOPLX1C.XCFCDS72) VOLSER(T1CX02)
          MAXSYSTEM(5)
          CATALOG
      DATA TYPE(SYSPLEX)
           ITEM NAME(GROUP) NUMBER(60)
           ITEM NAME(MEMBER) NUMBER(50)
           ITEM NAME(GRS) NUMBER(1)

We will create new data sets using the following parameter:
    MAXSYSTEM(10)

The following is our definition in SYS1.PARMLIB(COUPLE00)

COUPLE SYSPLEX(TOPLX1C)
        PCOUPLE(SYS1.TOPLX1C.XCFCDS71,T1CX01)
        ACOUPLE(SYS1.TOPLX1C.XCFCDS72,T1CX02)
        RETRY(100)
        MAXMSG(1000)
        CFRMPOL(TESTPLX5)

My question is, can I switch the current systems to use the new data sets, 
without shutting down any systems?
If so what are the commands?
I was looking at the SETXCF command, but it does not seem to do what I am 
looking for.

If we have to shut down the systems, do we have to shut all 5 down at the same 
time?

Any input is appreciated.

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--
Mark Jacobs
Time Customer Service
Tampa, FL
----

The quiet ones are the ones that change the universe...
The loud ones only take the credit.

Londo Mollari - Babylon 5

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