Browse Prior Art Database

Dedicated Restart Member for Sysplex

IP.com Disclosure Number: IPCOM000015270D
Original Publication Date: 2002-Jan-27
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 73K

Publishing Venue

IBM

Abstract

···1.Problem ··1)Retained lock IMS-CIs

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Dedicated Restart Member for Sysplex

···1.Problem
··1)Retained lock IMS-CIs

··2)DB2's indought sleds
··3)Transaction that failed-IMS has after Gu message but not processed

2.Solution
··Deploy "ERE only light IMS"


···a. Increase frequency of simple chekpoint
···b. Use 2GB up LOG Buffer of IMS V8 implement for keepin performance

···· ; cf. IMS V7 + PQ12427(exploits 64-bit large real storage.

Buffers for IMS logs ... above the 2GB)
···c. Use Dummy SDO-LIB for reducing ERE time
···d. Delete or reduce buffers and options not needed for ERE

··· ex. DB buffer,

··· fixed control blocks(VTCB,etc.),

··· log buffers ,

··· user initiate process(and definitions)

3.Operation(Cross system restart)
···Restart group = IMS + DB2
···Restart command order --> DB2 first (default /STA SUBSYS)

IR LM 1

IRLM 2

IR LM 3

IRLM 1

IRLM

IM S1

DB2

-1

IRLM 2

IRLM

IM S2

DB2

-2

IRLM 3

IR LM

light light

D B 2-1 D B 2-2 D B 2-3

IRLM IRLM

light -IMS1 -IM S 2 -IMS3

IRLM

IMS3

DB2

-3

dedicated restart partion

··

1

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