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HP NonStop Shadowbase Command Definitions

Monitor Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

PULSE Command

The PULSE command enables the operator to send a special data packet,

known as a ‘PULSE’ through the replication stream. When completed, the

PULSE will provide a series of timings based upon how long it takes the

message to transverse the replication stream and return to the source

component. These PULSe timing values can then be read by issuing the

PULSESTATS command.

Note that there are various pulsing error conditions (such as pulse file full)

that can cause AUDMON to disable the pulse feature. The PULSE

command can also be used as the trigger to try to re-enable the pulse

feature after it becomes disabled.

A CONSGROUP Consumer process grouping concept was also

introduced. This new CONS object parameter allows the grouping of a

number of Consumer processes into an identifiable group name which can

be entered for the PULSE command (and PULSESTASTS command).

This allows one to logically group a number of related replication threads,

for example if multiple replication threads are being used to replicate to a

common target database. See later enhancements in the softdoc for more

information pertaining to the CONSGROUP parameter details.

The PULSE command supports generating pulse events at the COLL

object, CONS object, or CONSGROUP levels. The command syntax for

the PULSE command is as follows:

PULSE {[COLL] {<collname>}

{* }}

{[CONS] {<consname>}

{* }}

{[CONSGROUP] {<consgroupname>}} [!]

Pulsing a Collector (or all Collectors via *) will generate pulses for all

source or client Consumers attached to the Collector(s). Pulsing a

specific Consumer (or all Consumers via *) will only generate pulses for

source or client Consumers. Pulsing a Consumer group will only generate

pulses for source or client Consumers in that group. Source or client

Consumers are the source of a pulse event; target or server Consumers

simply process the pulse event(s) they receive and return them.

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HP Integrity NonStop H-Series Guide de l'utilisateur Page 30