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Why and for what are ONLINE PSB's

 
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rajatbagga

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Joined: 11 Mar 2007
Posts: 195
Location: india

PostPosted: Thu Mar 15, 2007 5:11 pm    Post subject: Why and for what are ONLINE PSB's
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Can anybody tell what are ONLINE PSB's. Why and for what are they used . Following is an example of online PSB:

PRINT NOGEN
* PCBS TP DEFAULT PARA CSP/AD/RS/COBOL ***
PCB TYPE=TP,MODIFY=YES,EXPRESS=NO
PCB TYPE=TP,MODIFY=YES,EXPRESS=YES
*
* MESSAGE DATA BASE = NO *** CSP-RS/COBOL ***
ELAPCB WORK=YES,WORKDBD=ELAWORK
*
PSBGEN LANG=COBOL,CMPAT=YES,PSBNAME=BVEA54
END

please tell me the fuctionality of this above mentioned ONLINE PSB

Thanks in Advance,
Rajat
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Devzee

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Joined: 20 Jan 2007
Posts: 684
Location: Hollywood

PostPosted: Sat Mar 17, 2007 11:18 pm    Post subject:
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Online PSB is for IMS MPP programs.

PCB TYPE=TP -> Transaction Type which is ONLINE
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Bitneuker

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Joined: 07 Nov 2005
Posts: 1105
Location: The Netherlands at Hole 19

PostPosted: Mon Mar 19, 2007 7:08 pm    Post subject:
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In addition to what Devzee wrote:

TYPE=TP PCB's are for communicating with the message-queue which you may also consider some kind of database. As you may know every database, including the message-queue, needs a PCB for program communication with that particular database. The TP-PCB is usually called an IO-PCB and is responsible for communication of message sent to and from a terminal. You may also define an alternate-pcb (MODIFY=YES)which may be used to route messages to a different terminal or other MPP's.

Since BMP's also may process messages they also use an IO-PCB.

For more exploring follow the first link in my signature and do some searching.
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