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ananth86
New User
Joined: 10 Jun 2009
Posts: 59
Location: Hyderabad
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Hi Whenever I see a catalog in a sysplex any system, I am seeing three components of it. I know usually for a catalog we have a catalog component and an Index component.
But I was confused abt the third component, The Listcat of the extra component gives the same result as the catalog component.
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Command - Enter "/" to select action Message Volume
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RDC3CAT LIBP01
RDC3CAT LIBP01
RDC3CAT.CATINDEX LIBP01
***************************** End of Data Set list ****************************
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Any idea or thoughts about it? I am seeing this strange thing only for the catalogs in the sysplex. |
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expat
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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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What do you see when you perform a LISTCAT against the catalog.
Beware - there is a difference between this and a straight LISTCAT, so please reference the IDCAMS manual before doing the LISTCAT operation. |
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nevilh
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Joined: 01 Sep 2006
Posts: 262
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One can witness this phenomenon on zos systems if the usercatalog is defined to multiple systems and the master catalog from system B is defined as a usercatalog on system A and the MLA is set to greater than 1.
(MLA = Multi Level ALias). It also depends on the search criteria given on the 3.4 panel. To put it simply if the master catalogs from other systems in the sysplex are defined as usercatalogs on the system where you issue the list command, it is possible that all the master catalogs will be searched. |
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ananth86
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Joined: 10 Jun 2009
Posts: 59
Location: Hyderabad
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[quote="nevilh"]One can witness this phenomenon on zos systems if the usercatalog is defined to multiple systems and the master catalog from system B is defined as a usercatalog on system A and the MLA is set to greater than 1.
quote]
Yes you are correct. But I was quite confused with what I saw in 3.4
| Code: |
Total Tracks: 13694 non-x: 13694 Data Sets: 3 non-x: 3
-------------------------------------------------------------------------------
Command - Enter "/" to select action Message Volume
Tracks % XT Device Dsorg Recfm Lrecl Blksz Created Referred
Catalog
-------------------------------------------------------------------------------
RDC3CAT LISTC RC=0 LIBP01
6825 ? 104 3390 VS ? ? ? 1997/06/08 2011/04/14
RDC3CAT
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RDC3CAT LISTC RC=0 LIBP01
6825 ? 104 3390 VS ? ? ? 1997/06/08 2011/04/14
SYSMCAT.X21
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RDC3CAT.CATINDEX LIBP01
44 ? 2 3390 VS ? ? ? 1997/06/08 ***None***
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The issued a Listcat line command for both the instances of "RDC3CAT " I got the same result. Hope that is because the Listcat command pulls the information from the MasterCatalog of the current system.
But the confusion starts here :
If u see the first occurence of "RDC3CAT " shows the In-catalog as "RDC3CAT " itself. why is that so?
Any reference to know MORE about these things in detail?
Thanks in Advance |
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expat
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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| Post the code that you used for the LISTCAT |
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Pete Wilson
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Joined: 31 Dec 2009
Posts: 580
Location: London
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| I think it's because Usercatalogs unlike normal VSAM files have a self describing record in their catalog entry |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| Pete, that was the point I was trying to get the OP to realise |
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