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deadlycoder · Beginner Joined: 25 May 2006 Posts: 24 Topics: 11

Hi all,

I was trying to move certain members in my PDS. I was not able to move last 2 out of 8.

When I saw the destination PDS information it showed that out of 2 allocated cylinders only 1 was used with 1 extent. But then also there was a space constraint.

I don't know why..

Can anyone let me know why this is happening?
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ofer71 · Posted: Mon Aug 14, 2006 3:41 am Post subject:

How many directory block are there? How many members already in the PDS?

O.
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deadlycoder · Beginner Joined: 25 May 2006 Posts: 24 Topics: 11

Hi,

The LRECL is 80 and BLKSIZE is 27920.

There are four members having a total size of 723.

Only 1 cylinder is being utilized. 2 were allocated. I feel as there is a lot of space still there how is it not allowing to accomodate the other 2 members having a total size of 229.

I even compressed the PDS.
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kolusu · Posted: Mon Aug 14, 2006 4:36 am Post subject:

deadlycoder,

It does not matter how much SPACE you have , you are running short of Directory Blocks. Each directory block can have a max of 5 to 6 members. It seems that you allocated your PDS with just 1 directory block. You need more than that.

Kolusu
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deadlycoder · Beginner Joined: 25 May 2006 Posts: 24 Topics: 11

Thanks Kolusu,

That was the correct solution.
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vivek1983 · Intermediate Joined: 20 Apr 2006 Posts: 222 Topics: 24

deadlycoder,

Try to compress the target PDS by giving "z" against it when viewing the PDS thru 3.4 ISPF panel.

Vivek.G
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vivek1983 · Intermediate Joined: 20 Apr 2006 Posts: 222 Topics: 24

Can someone explain what actually happens when compressing a PDS? Does the directory blocks gets increased?

Regards,
Vivek.G
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A dream is just a dream. A goal is a dream with a plan and a deadline. (Harvey Mackay)

anbesivam · Beginner Joined: 09 Aug 2006 Posts: 66 Topics: 14

Hi vivek1983,

The COMPRESS command compresses partitioned data sets on a specified volume. Compressing (degassing) removes unused space between members in a partitioned data set. Depending on the filtering criteria you specify, you can compress either all or some of the partitioned data sets. This command is useful for compressing system partitioned data sets before you apply maintenance (thus avoiding certain space-related abends).

Note: You must not compress the data sets that contain DFSMSdss or IEBCOPY executable code.

The actual PDS compression is done on the existing volume using the IEBCOPY utility. To prevent loss of data if the system or IEBCOPY
abnormally ends during the processing, back up volumes or data sets that meet the filtering criteria before using the COMPRESS Command.

The COMPRESS command cannot process partitioned data sets that:
o Are unmovable
o Have no directory

Hope this info helps you.

Bill Dennis · Posted: Tue Aug 22, 2006 9:21 am Post subject:

issac1029 · Intermediate Joined: 10 Dec 2005 Posts: 159 Topics: 75

Hi Dennis,

'convert to PDSe' means delete pds and define a pdse? or there is a way to convert?

kolusu · Posted: Wed Aug 23, 2006 7:48 am Post subject:

Bill Dennis · Posted: Wed Aug 23, 2006 8:32 am Post subject:

A PDSe requires a new dataset allocation as DSNTYPE=LIBRARY. An existing PDS cannot be transformed "in place".

I don't have DFDSS, but I'd imagine that the result of kolusu's example is a new dataset.
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kolusu · Posted: Wed Aug 23, 2006 8:48 am Post subject:

Bill Dennis · Posted: Wed Aug 23, 2006 2:54 pm Post subject:

You're telling me that when you run this against a PDS, a new dataset isn't allocated? The COPY, TGTALLOC and CATALOG parameters sure sound you're creating a new dataset!
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Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

kolusu · Posted: Wed Aug 23, 2006 7:37 pm Post subject: