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ranga_subham
New User
Joined: 01 Jul 2005 Posts: 51
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Hi,
Shortly, I will be working on COBOL, DB2 & IMS/DB with GSAM access method. I request you people to tell me the critical details about this combination. What is peculiar about GSAM and what are the constraints? I never worked on IMS before.
Please let me know what is possilble / not possible while working on COBOL-DB2-IMS/DB (GSAM).
Thanks for your time. |
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gowtham_1982 Warnings : 1 Active User
Joined: 02 Dec 2005 Posts: 109
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ranga_subham wrote: |
Hi,
Shortly, I will be working on COBOL, DB2 & IMS/DB with GSAM access method. I request you people to tell me the critical details about this combination. What is peculiar about GSAM and what are the constraints? I never worked on IMS before.
Please let me know what is possilble / not possible while working on COBOL-DB2-IMS/DB (GSAM).
Thanks for your time. |
Hi Ranga_subham,
regarding the GSAM files, you need to specify the GSAM file you are supposed to use in PCB list of the PSB. this can be done by specifying as TYPE=GSAM.
There is nothing great with respect to GSAM files as they too are flat files. it all depends on the application whether you need to build and insert into the GSAM file or read from the GSAM file.
please let me know for more clarification. in the mean time, i too will look for that PSB.
kind regards,
gowtham |
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gowtham_1982 Warnings : 1 Active User
Joined: 02 Dec 2005 Posts: 109
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Hi Ranga_subham,
PFA the psb with gsam file.
kind regards,
gowtham |
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ranga_subham
New User
Joined: 01 Jul 2005 Posts: 51
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Hi gowtham_1982,
Thanks for the inputs you've given. It is useful to me. I am told that a senior person will give a lecture on GSAM on IMS/DB after a week or two. |
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martin9
Active User
Joined: 01 Mar 2006 Posts: 290 Location: Basel, Switzerland
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hy ranga,
gsam means general sequential access method,
means there is a possibility to use a sequentiel
dataset (input or output) like an ims-db.
this is useful for data integrity, means all data in
ims or db2 are in two phase commit state,
therefore the data integrity is always given.
If you work with sequentiel datasets as well,
data integrity is only given, when using your
sequentiel files as gsam files.
for a full discussion, wait for your lecture first,
then you will understand, it is easier as you
might think...
martin9 |
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