HP Integrity NonStop H-Series Guide de l'utilisateur télécharger pdf (Page 167)

HP NonStop Shadowbase Command Definitions

Consumer Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

158

be set on the client side Consumer, when they are enabled on the

server side Consumer.

RESOLVELOCKSQ {ON}

{OFF}

Initial Changed

Version Version Values Default Minimum Maximum Alter

3.950 OFF OFF ON No

Client Server Extended Open Target

RESOLVELOCKSQ can be enabled to allow HP Shadowbase to resolve

locking anomalies that might result when, for example, a Consumer lock

collides with an application lock in an active-active scenario; or when a

unique Enscribe alternate keys or unique SQL indices are involved. When

necessary, the RESOLVELOCKSQ algorithm will attempt to store up to

RESOLVELOCKSQMAX events in memory. It uses a flat memory

segment to queue these events. The size of the memory segment is

defined by the RESOLVELOCKSQMEM parameter. After the Consumer

queues RESOLVELOCKSQMAX events or runs out of memory space in

the flat segment, it will then engage an overflow disk queue file to store

the remaining events.

Notes:

 If the overflow queue is used, it will be automatically cleared after

RESOLVELOCKSQ processing is complete.

 The size one needs for the overflow disk queue is contingent upon the

size of transactions that are involved within a given locking scenario.

Some experimentation might be needed to determine an effective

configuration for your environment.

 If this parameter is set to ON the OVFLQFILE parameter must also be

set.

 If you are replicating from NonStop to NonStop over TCP/IP,

RESOLVELOCKSQ must be set on both the client and server

Consumer sides (so they match). HP Shadowbase checks this

because it is important for the Collector to know that this is enabled for

this thread.

RESOLVELOCKSQ can be enabled by setting this CONS object

parameter to ON. The default is OFF.

RESOLVELOCKSQMAX

Initial Changed

Version Version Values Default Minimum Maximum Alter

3.950 1000000 0 2147483647 No

Client Server Extended Open Target

1 2 ... 162 163 164 165 166 167 168 169 170 171 172 ... 345 346

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HP Integrity NonStop H-Series Guide de l'utilisateur Page 167

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