HP Integrity NonStop H-Series Betriebsanweisung PDF herunterladen (Seite 160)

HP NonStop Shadowbase Command Definitions

Consumer Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

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When a pulse is acknowledged (i.e., AUDMON receives a pulse

acknowledgment message), if the difference between the target I/O

completion time and the time the pulse was created/inserted into the

source pulse file is greater than PULSEMAXREPSONSE, AUDMON will

output an EMS message to identify that the pulse is “out of band” (i.e.,i.e.,

replication latency is not within PULSEMAXRESPONSE). Subsequent

pulses that also come back “out of band” will also be output to EMS,

subject to the PULSEWARNRATE interval.

Note: That if a completed pulse is back “in band” (within the

PULSEMAXRESPONSE time) and the prior pulse was “out of

band”, an EMS message will be reported indicating that pulsing on

this replication thread is now “in band”. If HP Shadowbase

replication is significantly behind, it might be desirable to alter

PULSEMAXRESPONSE to a higher value for a period of time to

disable the “out of band” messages from being reported to EMS.

This parameter can be altered at any time.

Note: That “true” replication latency monitoring via the

PULSEMAXRESPONSE expects the source and target system

clocks to be synchronized (either with each other or with GMT).

However, this is often not the case. The NonStop and HP

Shadowbase Other Servers support similar parameters to correct

for the situation where the clocks are not synchronized. On the

NonStop side these parameters are PULSECLOCKADJ and

PULSESVRCLOCKADJ. These parameters can be automatically

controlled through the use of the PULSEAUTOADJ parameter.

PULSERATE <seconds>

Initial Changed

Version Version Values Default Minimum Maximum Alter

3.990 0 (disabled) 0 1209600 Yes

Client Server Extended Open Target

This parameter is the rate, defined in seconds, at which a pulse will be

generated automatically by AUDMON for a source or client Consumer

(this parameter is ignored for a target or server Consumer). When

PULSERATE is set to 0, pulses will not be generated. When

PULSERATE is set greater than 0, pulse events will be generated for all

DBS objects with PULSEFILE ON even before the related Consumer

process has been started. This is done so that warnings can be produced

by AUDMON should the Consumer not get started. Note that some of

these early pulse events might not complete if a Collector skips the audit

trail locations where they were inserted. This can occur the first time you

start HP Shadowbase and an ADTSTARTxxx location is supplied, or you

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