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HP NonStop Shadowbase Command Definitions

UNDO Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

337

The UNDO command initiates the apply phase when running in

UNDOMODE and the extract phase of the UNDO has previously

completed. The syntax is:

UNDO [QMGR] {[<audmon-name>.]<qmgr-name> [ {, COMMIT }

{, ABORT } ] }

{[<audmon-name>.]* [ {, COMMIT }

{, ABORT } ] }

COMMIT

This option, if specified, indicates that any dangling transactions present in

the data that was read for the UNDO are to be committed. Dangling

transactions are any transactions for which one or more events were

within the start and stop range for the UNDO, but no abort or commit

record was present. If the UNDO range has no dangling transactions, this

option will have no effect.

ABORT

This option, if specified, indicates that any dangling transactions present in

the data that was read for the UNDO are to be aborted. Dangling

transactions are any transactions for which one or more events were

within the start and stop range for the UNDO, but no abort or commit

record was present. If the UNDO range has no dangling transactions, this

option will have no effect.

By default, if neither of the COMMIT or ABORT options are specified, the

UNDO command will be rejected if any dangling transactions are

detected. Where possible, it is recommended that neither of these

options be specified, and an UNDO start and stop time range be

configured such that no dangling transactions are present.

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HP Integrity NonStop H-Series Guida Utente Pagina 346