Concurrency issues

This section explains how

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determines the status of Db2 objects and ensures the validity of resources that can be shared during

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processing.

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permits optional control of concurrent updates to multiple spaces or partitions and provides a more consistent view of the data in an updated transaction environment.

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exercises control by issuing DB2 -STOP, -START, and QUIESCE commands as needed to control access to spaces or partitions.

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might also issue these commands at the partition level for table spaces when using the DSNUM option to make copies by partition.

Changes that

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might make to the status of a target space or partition during the UTILINIT and UTILTERM phases are discussed and summarized in Db2-commands-issued-by-BMC-AMI-Copy-for-read-and-write-databases.

Related topics

Bypassing-spaces-with-a-bad-status

Retrying-spaces-in-UTxx-status

Db2-commands-issued-by-BMC-AMI-Copy-for-read-and-write-databases

Running-BMC-AMI-Copy-jobs-concurrently

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might also coordinate the status changes required for space or partition access with other concurrently executing BMC utilities. For more details, see Concurrency-with-other-BMC-utilities.

This section contains the following topics:

 

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