Scheduler configuration settings

Use this page to modify scheduler settings.

To view this administrative console page, click Resources > Scheduler Configurations > scheduler_name.

Configuration tab

Name
The name by which this scheduler is known for administrative purposes.
Data type String
JNDI Name
The JNDI name for the scheduler.

The JNDI name specifies where this scheduler instance is bound in the namespace. Clients can look this name up directly, although the use of resource references is recommended.

Data type String
Description
A description of this scheduler for administrative purposes.
Data type String
Category
A string that can be used to classify or group this scheduler.
Data type String
Datasource JNDI Name
Datasource where persistent tasks will be stored.

Any datasource available in the name space can be used with a scheduler. Multiple schedulers can share a single datasource while using different tables by specifying a table prefix.

Data type String
Datasource Alias
Alias to a user name and password used to access the datasource.
Data type String
Table Prefix
String prepended to the table name TASK.

Multiple independent schedulers can share the same database if each instance specifies a different prefix string.

Data type String
Poll Interval
The interval at which the scheduler daemon polls the database. Each scheduled, repeating task's minimum repeat interval will be equal to this value regardless of what is specified on the task.

Each poll operation can be expensive. If the interval is extremely small and there are many scheduled tasks, polling can consume a large portion of system resources.

Data type Integer
Units Seconds
Default 30
Range Any positive long integer
Work Manager
Specifies the work manager used by this scheduler.

The Work Manager is a server object that serves as a logical thread pool for the scheduler. Each repeating task that is created using this scheduler will use the "Number Of Alarm Threads" specified in the Work Manager which will affect the number tasks that can run concurrently. Use the Work Manager's "Service Names" property to limit the amount of context information that is propagated to the task when it executes.

When a task fires, the task is run in the work manager associated with the scheduler instance. Configuring a scheduler with a specific work manager enables you to control how many tasks are actively running at a given time.

Note: Although work managers and scheduler instances are configured at different scopes, a scheduler must reference a work manager in the same scope. For example, a scheduler instance configured at the server1 scope must use a work manager also configured at the server1 scope.


Related concepts
Scheduler daemon
Related tasks
Creating a scheduler resource reference
Configuring a scheduler
Related reference
Administrative console buttons



Searchable topic ID:   ueac_schedconfigsettings
Last updated: Jun 21, 2007 8:07:48 PM CDT    WebSphere Business Integration Server Foundation, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.wasee.doc/info/ee/webui_pme/ui/ueac_schedconfigsettings.html

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