As long as new data sets are *at least as big* as the old ones, dynamic switching works fine. For sake of clarity, I like to run with all data sets having a suffix of '00' so that no one--including me--gets confused about which ones are current. It takes an extra step, but once you're running on a new set with alternate names, you can delete and redefine the old set to match PARMLIB(COUPLExx). That way you avoid a possible finger check as well as staying on a standard set of names.
. . JO.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] From: [email protected] To: [email protected], Date: 01/03/2014 11:22 AM Subject: Re: New XCF data sets Sent by: IBM Mainframe Discussion List <[email protected]> Fred, You do use the SETXCF command, in a series of commands to switch dynamically without an IPL. 1) Define your new primary and alternate data sets using normal XCF format utility 2) Use SETXCF command to change your new primary data set as the alternate data set to your current environment using the ACOUPLE parameter 3) Use SETXCF command to switch from primary to alternate 4) Use SETXCF command to set your new alternate data set as the alternate to the new primary just set 5) Update COUPLExx, IEASYMxx, etc. as needed. Thanks, Craig From: Fred Kaptein <[email protected]> To: [email protected], Date: 01/03/2014 13:02 Subject: New XCF data sets Sent by: IBM Mainframe Discussion List <[email protected]> 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. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
