Portal | Manuals | References | Downloads | Info | Programs | JCLs | Master the Mainframes
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Usergroups Profile Log in to check your private messages Log in
 

 

Difference between user catalog and master catalog

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DFSORT/ICETOOL
View previous topic :: :: View next topic  
Author Message
p.d.prasad

New User


Joined: 20 Jun 2006
Posts: 14
Location: hyderabad

PostPosted: Thu Jul 13, 2006 12:43 am    Post subject: Difference between user catalog and master catalog
Reply with quote

HI
Can any one let me know the difference between user catalog and master catalog,what exactly they mean??
Back to top
View user's profile Send private message

mike53

New User


Joined: 09 Jul 2006
Posts: 3
Location: UK

PostPosted: Sun Jul 16, 2006 8:23 pm    Post subject:
Reply with quote

The master catalog is a user catalog, but it is special because it is the catalog in which the operating system looks first (by default) when finding catalogued datasets.
The only thing that makes it the master catalog is that its name is stored in a special place that is read at IPL time. In current releases of z/OS, that place is the LOADxx member of the IPLPARM dataset used for the current IPL.
A master catalog of one system can be a mere user catalog from the point of view of another system. This is necessary in order to be able to create and maintain the master catalog in the first place.
Normally, the master catalog has all the other user catalogs connected to it, so that they can be found easily.

Mike
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DFSORT/ICETOOL All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Difference between TWALENG and TWASIZE Arunkumar Chandrasekaran CICS 3 Tue Jan 03, 2017 12:57 pm
No new posts Sticky: difference between ... DUMMY ... and ... enrico-sorichetti JCL & VSAM 0 Mon Oct 17, 2016 4:31 pm
No new posts SORT - E15 and E35 using same user ex... Abhi Nature DFSORT/ICETOOL 12 Mon Oct 03, 2016 4:33 pm
No new posts Command UNIQUE CONSTRAINT on any tabl... rohanthengal DB2 2 Thu Aug 18, 2016 3:48 pm
No new posts User exit in COBOL programs ganasrinivasan PL/I & Assembler 0 Thu Aug 18, 2016 12:48 pm


Facebook
Back to Top
 
Mainframe Wiki | Forum Rules | Bookmarks | Subscriptions | FAQ | Tutorials | Contact Us