Journaling - How many journals should I configure?

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Published on June 06, 2006

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IBM Form #: TIPS0606


Authors: Hernando Bedoya

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    Abstract

    A frequently posed i5/OS™ question goes something like this, “I have 100 tables (files), should I try to route all the journal traffic into one master journal or would I be better off with perhaps 10 journals?" What are the pros and cons associated with each approach?”

    The answer depends on what you’re trying to optimize: run-time performance, IPL recovery duration, target-side replay parallelism, or remote journal transport efficiency.

    This Technote helps you think through the trade-offs.

    Written by Larry Youngren

    Software Engineer

    IBM Systems &Technology Group, Development

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    Special Notices

    This material has not been submitted to any formal IBM test and is published AS IS. It has not been the subject of rigorous review. IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a client responsibility and depends upon the client's ability to evaluate and integrate them into the client's operational environment.