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Singaram
New User
Joined: 19 Aug 2009
Posts: 19
Location: India
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Hi,
Does the usage of COBOL internal sort with INPUT and/or OUTPUT procedure invokes DFSORT internally while execution if we have set FASTSRT = YES as the COBOL compiler option.
Or is this internal invocation of DFSORT dependent on COBOL version and DFSORT release version.
We are using Enterprise COBOL and DFSORT release 14.
Thanks in advance
Singaram |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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FASTSRT only applies to USING and GIVING. It has no effect on INPUT or OUTPUT procedures.
I cannot answer your DFSORT question conclusively.
Perhaps this post needs to be moved to the COBOL forum?
Bill |
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Robert Sample
Global Moderator
Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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| Or is this internal invocation of DFSORT dependent on COBOL version and DFSORT release version. |
I believe the COBOL compiler invokes the system sort package (DFSORT, SYNCSORT, or whichever) no matter what. FASTSRT merely tells whether or not COBOL will do the I/O for the USING and GIVING files. |
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Frank Yaeger
DFSORT Developer
Joined: 15 Feb 2005
Posts: 7129
Location: San Jose, CA
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Singaram,
I'm not sure what you're asking.
The COBOL SORT verb invokes DFSORT. If COBOL sets the FASTSRT option, then DFSORT accesses the data sets directly. If COBOL sets the NOFASTSRT option, then COBOL accesses the data sets and passes the records to/from DFSORT.
For more information on FASTSRT, see the COBOL manual. For more information on DFSORT and COBOL, see:
publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CT10/6.0?DT=20080528173317 |
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Singaram
New User
Joined: 19 Aug 2009
Posts: 19
Location: India
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Thanks a lot Frank.
To clarify my question; consider the following 4 cases
CASE1 :
COBOL SORT verb with USING/GIVING with FASTSRT option
CASE2 :
COBOL SORT verb with USING/GIVING with NOFASTSRT option
CASE3 :
COBOL SORT verb with INPUT/OUTPUT procedure with FASTSRT option
CASE4:
COBOL SORT verb with INPUT/OUTPUT procedure with NOFASTSRT option
In all the above said cases does COBOL invoke DFSORT for sort processing?
In all the above said cases will I/O be taken care by COBOL if NOFASTSRT is used and vice versa if FASSRT is in effect? [/quote] |
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Frank Yaeger
DFSORT Developer
Joined: 15 Feb 2005
Posts: 7129
Location: San Jose, CA
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| Quote: |
| In all the above said cases does COBOL invoke DFSORT for sort processing? |
Yes.
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| In all the above said cases will I/O be taken care by COBOL if NOFASTSRT is used and vice versa if FASSRT is in effect? |
Specifying the FASTSRT option does NOT guarantee that COBOL will use it - that decision is made by COBOL. If FASTSRT is in effect, then the I/O is taken care of by DFSORT. If NOFASTSRT is in effect, then the I/O is taken care of by COBOL. |
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Singaram
New User
Joined: 19 Aug 2009
Posts: 19
Location: India
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Thanks once again for the timely help.
As referred by you, I was going through the manual as
"http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CT10/6.0?DT=20080528173317" and found that
1.When NOFASTSRT is in effect, the E15 user exit routine is used for USING/INPUT PROCEDURE and the E35 exit routine is used for GIVING/OUTPUT PROCEDURE.
2. FASTSRT cannot be used for input processing when an INPUT PROCEDURE is specified. Referring for further details on the COBOL prog guide indicated that
With FASTSRT in effect:
| Quote: |
You cannot use an input procedure on an input file, nor an output procedure on an output file. Instead of using input or output procedures, you might be able to use DFSORT control statements: – INREC
– OUTFILE – OUTREC – INCLUDE – OMIT – STOPAFT – SKIPREC – SUM Many DFSORT functions perform the same operations that are common in input or output procedures. Code the appropriate DFSORT control statements instead, and place them either in the IGZSRTCD data set or the SORTCNTL data set. v Do not code the LINAGE clause for the output FD entry.
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Once again thanks a lot for proper direction Frank.[/quote] |
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