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jimmy_augustine
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Joined: 23 Jun 2004
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 Posted: Thu Jun 24, 2004 5:52 am Post subject: Maximum number of Datasets which can be concatenated! |
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Friends,
Is there any limit for the number of data sets that can be concatenated? If it is so,could any one tell me what is the maximum number of datasets that can be concatenated in a single step in a JOB? Any help would be appreciated.
Thanks
Jimmy |
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kolusu
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Location: San Jose
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jimmy_augustine
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Joined: 23 Jun 2004
Posts: 32
Topics: 13
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| Posted: Thu Jun 24, 2004 6:14 am Post subject: |
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Kolusu,
Thanks for the quick answer. Though in that it is mentioned that the max number of DD statements as 3273, will it be applicable to data set concatenation? I know that even if we want to concatenate data sets we need to code DD statements.
Thanks
Jimmy |
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kolusu
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| Posted: Thu Jun 24, 2004 7:13 am Post subject: |
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jimmy_augustine,
The limit of 3273 is applicable to the concatenation also. However sometimes it also depends on the pgm that is reading the concatenated datasets. For ex: ISRSUPC (3.14 or 3.15- Search-For Utility ) can only read upto 4 datasets.
Hope this helps...
Cheers
kolusu
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Kolusu
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jimmy_augustine
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| Posted: Thu Jun 24, 2004 7:34 am Post subject: |
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kolusu
You got it right.
And that is what I exactly want. I am using this 3.14 utility to scan for a set of programs. In my installation, we are doing a house keeping project now and I need to identify all the JCl members executing these set of programs in all the JCL PDS.
So if this ISRSUPC could scan only a max of 4 concatenated data set, I am stuck again. Is there any other utility I can use?
It would be really great if I get some thing like that.
Thanks in advance
Jimmy |
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kolusu
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Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
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| Posted: Thu Jun 24, 2004 7:59 am Post subject: |
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Jimmy Augustine,
Why don't you split the job into different steps. Each step will have 4 datasets as a concatenation. And use MOD for the output scan results, so that you can have all the results in one single dataset. Alternatively, If your shop has file-aid then you can use it.
Ex:
| Code: |
//STEP0100 EXEC PGM=ISRSUPC, *
// PARM=(SRCHCMP,XREF,
// 'ANYC')
//NEWDD DD DSN=DATASET TO BE SEARCHED 1,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 2,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 3,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 4,
// DISP=SHR
//OUTDD DD DSN=OUTPUT SCAN RESULT DATASET,
// DISP=(MOD,CATLG,DELETE),
// UNIT=SYSDA,
// SPACE=(CYL,(25,25,RLSE)
//SYSIN DD *
SRCHFOR 'NX005'
SRCHFOR 'OL430'
/*
//STEP0200 EXEC PGM=ISRSUPC, *
// PARM=(SRCHCMP,XREF,
// 'ANYC')
//NEWDD DD DSN=DATASET TO BE SEARCHED 5,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 6,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 7,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 8,
// DISP=SHR
//OUTDD DD DSN=OUTPUT SCAN RESULT DATASET,
// DISP=(MOD,CATLG,DELETE),
// UNIT=SYSDA,
// SPACE=(CYL,(25,25,RLSE)
//SYSIN DD *
SRCHFOR 'NX005'
SRCHFOR 'OL430'
/*
....
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Hope this helps...
Cheers
Kolusu
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Kolusu
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jimmy_augustine
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Joined: 23 Jun 2004
Posts: 32
Topics: 13
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| Posted: Thu Jun 24, 2004 8:13 am Post subject: |
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kolusu,
Thanks and the JCL above is a solution, but I need to write an additional program to generate a JCL like above, because manually coding this jcl is going to be a tedious task. However could you please tell me how can I use FILE-AID for this? we have FILE-AID installed in our shop.
Thanks
Jimmy |
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kolusu
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Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
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| Posted: Thu Jun 24, 2004 9:05 am Post subject: |
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Jimmy Augustine,
The following JCL will give you the desired results.
| Code: |
//STEP0100 EXEC PGM=FILEAID,REGION=4M
//*
//DD01 DD DSN=DATASET TO BE SEARCHED 1,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 2,
// DISP=SHR
// DD DSN=DATASET TO BE SEARCHED 3,
// DISP=SHR
....
// DD DSN=DATASET TO BE SEARCHED N,
// DISP=SHR
//SYSLIST DD DSN=OUTPUT SCAN RESULT DATASET,
// DISP=(NEW,CATLG,DELETE),
// UNIT=SYSDA,
// SPACE=(CYL,(25,25,RLSE)
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
$$DD01 LIST IF=(1,0,C'NX005'),
OR=(1,0,C'OL430')
/*
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Hope this helps...
Cheers
Kolusu
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Kolusu
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jimmy_augustine
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Joined: 23 Jun 2004
Posts: 32
Topics: 13
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| Posted: Thu Jun 24, 2004 9:18 am Post subject: |
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kolusu,
I tried the following for searching multiple datasets and i am successful in concatenating up to 45 datasets. But it seems to be very difficuly because if the PDS doesnt not contain any member, it abends. And it is abending due to some other reason as well but now I need to check what is the other reason. How ever for testing purpose, I made sure that all the 45 PDS are containing at least one member and that test ran fine. but when I included more members it abended again.
//SEARCH EXEC PGM=ISRSUPC,
// PARM=(SRCHCMP,XREF,
// 'ANYC')
I am still working on this issue:(
Now regarding that FILE-AID JCL, I think is not possible to specify the position of the search string as the position of the EXEC PGM=NX005' can be vary by 1 or 2 chars. 
Thanks a million Kolusu.
Jimmy |
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kolusu
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Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
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| Posted: Thu Jun 24, 2004 9:27 am Post subject: |
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Jimmy Augustine,
Even though you are able to concatenate 45 datasets for ISRSUPC, You are not guaranteed to get the correct results. So I suggest you use FILE-AID JCL provided above.
You don't have to worry about the length,position of the search string.
By coding 1,0 we do not worry about the length of the file. It implies start from pos1 and check till the end of the record for the specified characters. By coding length of zero file-aid scans the entire record. I specfied 1,0,c'nx005' which means file-aid will search from pos1 for the max length for the characters 'nx005'.
Hope this helps...
Cheers
Kolusu
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Kolusu
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jimmy_augustine
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Joined: 23 Jun 2004
Posts: 32
Topics: 13
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| Posted: Thu Jun 24, 2004 12:52 pm Post subject: |
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Kolusu
I tried with FILE-AID and that is working:) But again I found out that that the maximum data sets I would be able to concatenate is 91. I guess this is installation dependent. More over 91 was the max data set I was able to concatenate with ISRSUPC. As you mentioned, the out put of ISRSUPC is not reliable when we do a concatenation!! that is strange anyway!!.
Thanks a lot
Jimmy |
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kolusu
Site Admin
Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
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| Posted: Thu Jun 24, 2004 1:17 pm Post subject: |
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Jimmy Augustine,
| Quote: |
I tried with FILE-AID and that is working:) But again I found out that that the maximum data sets I would be able to concatenate is 91.
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Try increasing the Region parm in the JCL
| Code: |
//STEP0100 EXEC PGM=FILEAID,REGION=16M
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Coding REGION=0M will also work unless you work in a shop where usage of region=0M is banned
Hope this helps...
Cheers
Kolusu
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Kolusu
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shiv_swami
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Joined: 29 Nov 2003
Posts: 68
Topics: 14
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| Posted: Tue Feb 22, 2005 5:08 pm Post subject: File Aid Search- Concatenated DSN names in the output list |
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Kolusu,
Can we get the name/sequence # (As we get CONCAT# ISRSUPC search )of the concatenated dataset when FILEAID search is done with multiple inputs libraries ?
_________________
Regards,
Shivprakash |
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