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TIBCO iProcess® Engine 11.9.1

# WIS_LOCK_POOL_SIZES

WIS and WQS Process Configuration

Draft comments: This was implemented in 10.4 by CR 17890.

## Summary

This attribute defines the number of locks in the internal lock pool used by the `WIS` process.

Warning: Do not change the value of this process attribute unless you are advised to do by TIBCO Support.

## Applies To

The attribute can be set for a `WIS` process (only).

## Permissible Values

The attribute value must be one of the following:

Value | Meaning
TINY | Sets the size of the internal lock pool. (The actual numbers represented by these values are set internally by iProcess Engine.)
SMALL
MEDIUM
LARGE
HUGE
GIGANTIC
VAST

## Default Value

This attribute is not defined on a newly installed iProcess Engine node. In this case, the default value is:

Machine ID | Process | Instance | Value
0 | WIS | 0 | MEDIUM

The attribute only appears in the output of the `SHOW_ALL_ATTRIBUTES` command if you have explicitly assigned a value to it using the `SET_ATTRIBUTE` command. The default setting is not displayed

## Notes

The `WIS` process uses pools of locks to reduce its resource usage when handling large numbers of queues and work items. Because these locks are in pools, the resources required for locking do not increase as the number of work queues and work items increases. This attribute is only read when iProcess Engine starts up. Any changes that are made when iProcess Engine is running are ignored.

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