Process a job under a different library list

Often times there might be a need to process a job under a different library list -- without using a job description to set the library list. When the job ends, it is preferable to reset the library list back to its original values. The below should help do the trick. 


  
 /*----------------------------------------------*/        
 /* Purpose: Change Library List, Process And    */ 
   /*          Then Restore Original Library       */  
   /* Note:  Works When User Library List Can    */
 /*    Contain Max. 25 Libraries.          */
 /* Attn:  Include Error Message Monitoring    */
 /*----------------------------------------------*/        

    PGM                                                       
             DCL        VAR(&USRLIBL) TYPE(*CHAR) LEN(275)             
             DCL        VAR(&CURLIB)  TYPE(*CHAR) LEN(10)              
             DCL        VAR(&QCMD)    TYPE(*CHAR) LEN(308)             
             DCL        VAR(&QCMDLEN) TYPE(*DEC)  LEN(15 5)            
                                                                       
             /*----------------------------------------------*/        
             /* Save The Job Library List & Current Library  */        
             /*----------------------------------------------*/        
             RTVJOBA    USRLIBL(&USRLIBL) CURLIB(&CURLIB)              
                                                                       
             /*------------------------------------------------*/      
             /* Change The User Library List & Current Library */      
             /* to run the program in the desired environment  */
 /*------------------------------------------------*/       
             CHGLIBL    LIBL(SHANKLIB1 SHANKLIB2 SHANKLIB3 QGPL QRPG +         
                          QQRYLIB QTEMP) CURLIB(*CRTDFT)                
 CALL       PGM(LLLLLL/XXXXX)   /* Program Call */                          
             RCLRSC                                                     
                                                                        
             /*------------------------------------------*/             
             /* Restore The Original User Library List & */             
             /* Current Library before exiting Program   */             
             /*------------------------------------------*/             
             IF         COND(&CURLIB *EQ '*NONE') THEN(DO)              
             CHGVAR     VAR(&CURLIB) VALUE('*CRTDFT')                   
             ENDDO                                                      
             CHGVAR     VAR(&QCMD) VALUE('CHGLIBL LIBL(' *CAT +         
                          &USRLIBL *TCAT ') CURLIB(' *CAT &CURLIB +     
                          *TCAT ')')                                    
             CHGVAR     VAR(&QCMDLEN) VALUE(308)                        
             CALL       PGM(QCMDEXC) PARM(&QCMD &QCMDLEN)               

   ENDPGM

This was first published in August 2001

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