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meetrb · Beginner Joined: 24 Nov 2003 Posts: 40 Topics: 15

Hi,
I have a COBOL program that is processing a VSAM file that is being updated dynamically in the program.
The VSAM file has an alternate index that is also being built during the processing of the file.
The VSAM file has been directed to use the BLSR option with a BUFNI and BUFND value of 10 & 15 respectively.

My problem is that when we try to access a record using the alternate index through a START statement we are not getting the record. It seems that the alternate index is not being updated on the physical file and it is still resident in the buffer.
When we tried to run the job without the BLSR option this record is being accessed correctly.

Is there any way in which we can force the buffer contents to be written to the physical file?

Regards,
Meetrb

kolusu · Posted: Wed Aug 17, 2005 2:00 pm Post subject:

meetrb,

Try coding the following parameters in your JCL and see if it works.

meetrb · Beginner Joined: 24 Nov 2003 Posts: 40 Topics: 15

Hi,
Thanks for the reply Kolusu. We did make some headway but we are getting stuck at another point.
We have a high value record in the VSAM file and the START is being executed as given below:
START FILE-A KEY >= ALTERNATE-KEY

When the high value record is the only record in the file which is greater than the given record then any START executed after this record is always pointing to the high value record.

I still feel that it is a buffer isuue in which the record is being written into the buffer and the buffer access during the START operation is not coming out correctly.
Is there any COBOL command or JCL parameter that can be used in order to force the buffers to be written at periodic intervals into the physical file.

I cam across something about a WRTBFR macro but i am not sure how to use it.

Regards,
Meetrb