What is userid MASTER in Scheduler?

Products

• Scheduler Job Management

Issue/Introduction

A userid named MASTER is found in Scheduler with TYPE=MANAGER, and ACCESS=READ, WRITE.

Is this userid needed for the Scheduler to operate correctly? 

Resolution

MASTER is a default userid, and is defined to Scheduler during installation.  See Scheduler SAMPJCL member ISTEP31:

//STEP1OF1 EXEC CAJUTIL0                                                        
//SYSIN    DD *                                                                 
*                                                                               
*  DEFINE USERIDS                                                               
*                                                                               
DEFINE USERID NAME=MASTER,READ=READ,WRITPASS=WRITE,TYPE=M                       
DEFINE USERID NAME=SCDOPER,READ=READ,WRITPASS=WRITE,TYPE=M                      
DEFINE USERID NAME=YOURUID,READ=READ,WRITPASS=WRITE,TYPE=M 

To determine whether this userid is still needed, check the SECURITY option.  The security option is defined on the CAIRIM CAIJGEN command, and may be viewed from Scheduler ISPF option 3.10.

SECURITY=NO or YES means users must be defined to Scheduler (i.e, DEFINE USERID=....)

SECURITY=EXTERNAL  means users are not defined to Scheduler.  External security (ACF2, or RACF, or Top Secret) will be used to determine access rights.