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Hal2001
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Joined: 06 Jun 2006
Posts: 4
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| Does anyone know if an IMS GSAM database can be a GDG when not using VSAM? |
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IQofaGerbil
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Joined: 05 May 2006
Posts: 183
Location: Scotland
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| OK to use as GDG, we do this a lot. |
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gowtham_1982
Warnings : 1
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Joined: 02 Dec 2005
Posts: 109
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| Hal2001 wrote: |
| Does anyone know if an IMS GSAM database can be a GDG when not using VSAM? |
hi hal2001,
i dont understand your part of question 'when not using VSAM'?
as far as i know, we don't ( or can't) use VSAM files for IMS instead of GSAM file. we use GSAM file which are flat files unlike a VSAM CLUSTER.
kindly clarify me.
gowtham |
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Hal2001
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Joined: 06 Jun 2006
Posts: 4
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The physical access method that is used by GSAM depends on the type of dataset the application program has defined. If the programs is coded to access a sequential dataset, then I believe BSAM is used, but if the application is coded to access a VSAM ESDS then GAMS would use the VSAM access method.
In my question, I was trying to say that the GDG for my GSAM database would be a flat sequential file and not a VSAM ESDS. I'm trying to better understand how using a GDG would impact the JCL if a restart were needed and the GSAM database was being used as output.
Normally, you would code the (+1) for the GDG and then DISP=(NEW, CATLG,CATLG). What changes in the JCL for the Restart of a program that uses a GSAM database as an output dataset? |
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Varinder
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Joined: 10 Jun 2006
Posts: 4
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Yes, you can use GSAM files as GDGs
Varinder Singh |
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