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pradeepa_samay · Posted: Fri Jun 04, 2004 3:03 am Post subject: PROCOPT

Hello,

I now the below are fundamental questions, but would help to improve my
knowledge.

When we use just browse an IMS database we code PROCOPT=G in the PCB.
what happens if we are just browsing a database and still code
PROCOPT=A.
why dont we do this?

Also please let me know what are PROCOPT's GP , GO ? how are they diferent from PROCOPT G.

Regards
pradeepa

kolusu · Posted: Fri Jun 04, 2004 4:18 am Post subject:

pradeepa_samay,

Check this link which explains in detail about all the PROCOPTS

http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/DFSU30E1/1.2.3.2.1?DT=20010420130622#HDRPROFAST

Hope this helps...

Cheers

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

Bithead · Posted: Fri Jun 04, 2004 7:03 am Post subject:

Procopt 'A' will lock IMS database blocks with a higher intent that procopt 'G'. Basically, this means that you may well lock out other applications that are trying to read segments in the same physical block if you are just issuing GN or GU calls with procopt 'A'. A procopt of 'G' may lock out update or delete requests but will not lock out reads.

A procopt of GO will not issue any locks but may have occasional problems if segments are compressed.

If you are reading many segments but only updating or deleting a few, use 2 different PCBs, one with procopt of 'G' to read the database and another with procopt of 'A'. Issue a GHU on this second PCB once you have determine that a change is required, then issue the change in the normal fashion.

Sreejith · Posted: Mon Jun 07, 2004 7:48 am Post subject:

PROCOPT GP(or P with any procopt) is used if you do any path call. ie if the SSA use the command code 'D' Using path call you can retrieve multiple segment using one call. Although not recommended.