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How to delete or extend VTOC


IBM Mainframe Forums -> JCL & VSAM
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chaoj

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Joined: 03 Jun 2010
Posts: 103
Location: Dalian

PostPosted: Mon May 23, 2011 6:23 pm
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When I catlg a data set at volume TSO0002, it displayed the message below
Code:
VOLUME TSO0002 VTOC IS FULL


I must delete some data set then I can catlg it .
How can I delete or extend the VTOC ?

the VTOC for TSO0002 now is below
Code:
Volume . : TSO002                                                         
Command ===>                                                               
                                                                           
Unit . . : 3390                                                           
                                                                           
 Volume Data             VTOC Data              Free Space  Tracks   Cyls 
 Tracks . :   50,085     Tracks  . :      30    Size  . . :  28,793   1,900
 %Used  . :       42     %Used . . :      90    Largest . :  26,770   1,784
 Trks/Cyls:       15     Free DSCBS:     157                               
                                                Free Extents . :     100   
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gylbharat

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Joined: 31 Jul 2009
Posts: 565
Location: Bangalore

PostPosted: Mon May 23, 2011 6:28 pm
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Hi,
You can use any file utility to find the datasets which exists on the volume TSO0002. Then you can delete unwanted datasets from that volume.
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expat

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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales

PostPosted: Mon May 23, 2011 6:36 pm
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This would actually be a job to be performed by the storage management group responsible for DASD volumes.

Unless you ARE storage management DO NOT try to do this.
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Pedro

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Joined: 01 Sep 2006
Posts: 2547
Location: Silicon Valley

PostPosted: Mon May 23, 2011 7:12 pm
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The storage management team needs to offload all of the datasets and specify the VTOC size while reformatting the DASD.
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chaoj

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Joined: 03 Jun 2010
Posts: 103
Location: Dalian

PostPosted: Mon May 23, 2011 7:18 pm
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OK, I see , thanks all (Pedro,expat and gylbharat)
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nevilh

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Joined: 01 Sep 2006
Posts: 262

PostPosted: Tue May 24, 2011 11:56 am
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If you have ICKDSF Release 17 or later you can extend the VTOC without the need to offload any datasets. This feature has been available for at least 5 years
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expat

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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales

PostPosted: Tue May 24, 2011 12:56 pm
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On the point raised by nevilh above, from past experience you may have to move some datasets as the VTOC will not extend unless it can do so contiguously. However, this may have changed since the last time that I had to do this.

Again, depending on which software products that you have installed at your site there may be other ways to do this, FDR/CPK is a great tool for this.

But as mentioned previously, if you ain't storage, then don't try this at home.
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nevilh

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Joined: 01 Sep 2006
Posts: 262

PostPosted: Tue May 24, 2011 1:34 pm
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Quote:
from past experience you may have to move some datasets
no you won't Apar II08349 describes the process
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prino

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Joined: 07 Feb 2009
Posts: 1306
Location: Vilnius, Lithuania

PostPosted: Mon Jun 06, 2011 12:08 am
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nevilh wrote:
If you have ICKDSF Release 17 or later you can extend the VTOC without the need to offload any datasets. This feature has been available for at least 5 years

Do you have sample JCL for this, I might need to do this RSN...
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nevilh

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Joined: 01 Sep 2006
Posts: 262

PostPosted: Mon Jun 06, 2011 4:27 pm
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The JCL should look something like this

// EXEC PGM=ICKDSF
//DD1 DD DISP=SHR,UNIT=3390,VOL=SER=xxxxxx
//SYSPRINT DD SYSOUT=A
//SYSIN DD *
REFORMAT DDNAME(DD1) VERIFY(xxxxxx) EXTVTOC(30) EXTINDEX(15)

IF you cannot extend the VTOC (data allocated directly behind it), try

// EXEC PGM=ICKDSF
//DD1 DD DISP=SHR,UNIT=3390,VOL=SER=xxxxxx
//SYSPRINT DD SYSOUT=A
//SYSIN DD *
REFORMAT UNIT(1234) DDNAME(DD1) VERIFY(xxxxxx) NEWVTOC(cc,hh)

UNIT must specify the address of the offline device to be reformatted

where cc,hh is a valid cylinder head address (note disk must be offline for this version) "ANY" can be substituted for cc,hh and then the system will decide where to place it
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