I'd use //STDENV DD DDNAME=STDENV // DD DISP=SHR,DSN=INST.ADD.JAVA.STDENV
in the proc. Yes, it works. Bob IBM Mainframe Discussion List <[email protected]> wrote on 09/29/2015 04:50:54 PM: > From: Kirk Wolf <[email protected]> > To: [email protected] > Date: 09/29/2015 04:51 PM > Subject: Way to change a PROC to add a concatenation to existing DD? > Sent by: IBM Mainframe Discussion List <[email protected]> > > Consider an existing PROC: > > //JVMPRC80 PROC JAVACLS=, < Fully Qfied Java class..RQD > // ARGS=, < Args to Java class > // LIBRARY=?<HLQ>.JZOS.LOADLIB?, < STEPLIB FOR JVMLDM module > // VERSION=?80?, < JVMLDM version: 80 > // LOGLVL=??, < Debug LVL: +I(info) +T(trc) > // REGSIZE=?0M?, < EXECUTION REGION SIZE > // LEPARM=?? > //JAVAJVM EXEC PGM=JVMLDM&VERSION,REGION=®SIZE, > // PARM=?&LEPARM/&LOGLVL &JAVACLS &ARGS? > //STEPLIB DD DSN=&LIBRARY,DISP=SHR > //SYSPRINT DD SYSOUT=* < System stdout > //SYSOUT DD SYSOUT=* < System stderr > //STDOUT DD SYSOUT=* < Java System.out > //STDERR DD SYSOUT=* < Java System.err > //CEEDUMP DD SYSOUT=* > //ABNLIGNR DD DUMMY > //* > //*The following DDs can/should be present in the calling JCL > //* > //*STDIN DD < OPTIONAL - Java System.in > //*STDENV DD < REQUIRED - JVM Environment script > //*MAINARGS DD < OPTIONAL - Alt. method to supply args > // PEND > > > STDENV is a DD that is opened by the program (JVMLDM80). > > An installation would like to be able to automatically add control > statements to the end of this DD, without changing the JCL. > > So, instead we would want: > > //STDENV DD DDNAME=MYENV > // DD DISP=SHR,DSN=INST.ADD.JAVA.STDENV > > but this would require that all JCL that used this PROC would need to > change their DD:STDENV to DD:MYENV. > > Here's my question: is there a way to change the PROC so that the JCL that > uses it does not need to be changed? Its even OK to front-end the > JVMLDM80 program with an installation-written program that does something > and then invokes JVMLDM80. Its not possible (or desirable) to change > JVMLDM80. > > Maybe a front-end program that uses SVC99 to reallocate STDENV as the > concatenation? I'm not sure if this can be done without freeing the > existing STDENV DD. I guess that the front-end program could create a > temporary dataset and then copy the existing STDENV DD to it and then free > STDENV and then reallocate the concatenation.... > > Thanks in advance for any better suggestions. > > Kirk Wolf > Dovetailed Technologies > https://urldefense.proofpoint.com/v2/url? > u=http-3A__dovetail.com&d=AwIFaQ&c=-YrhKbO6aFrSLScoj0Mm- > IuOYlqIJC7nrlQzxTUu- > mA&r=QUNbpGQ8IoUh0oGUmu8eaMhKeADVwEw1926HSV3ksM4&m=42Ti- > zKADLBk2WsfnoN0vSaVICHS65AbeRkVa9EhWY4&s=3oi4FGfFPVhvsPqjo- > uvCCno32cxW26gLLFzPNz40tU&e= > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
