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Oracle TopLink Developer's Guide 10g Release 3 (10.1.3) B13593-01 |
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# Configuring an Announcement Delay

Use the announcement delay option to set the amount of time (in milliseconds) that a session should wait between the time that it is available and the time that it broadcasts its announcement message to the members of the coordinated cache. This additional delay may be necessary to give some systems more time to post their connections into the naming service (see "Configuring a Naming Service Type").

Table 91-10 summarizes which coordinated caches support announcement delay configuration.

Table 91-10 Coordinated Cache Support for Announcement Delay Configuration

Coordinated Cache | Using TopLink Workbench | Using Java
--- | --- | ---
JMS Coordinated Cache |  |
RMI Coordinated Cache |  |
CORBA Coordinated Cache |  |
Custom Coordinated Cache |  |

In addition to announcement delay, you may also need to consider packet time-to-live configuration (see "Configuring a Packet Time-to-Live").

## Using TopLink Workbench

To specify the announcement delay (in milliseconds) for an RMI coordinated cache, use this procedure:

1. Select a session or session broker in the Navigator. Its properties appear in the Editor.

2. Click the Cache Coordination tab. The Cache Coordination tab appears.

3. Ensure the Enable Cache Coordination option is selected, then select the appropriate coordinated cache Type (see Table 91-10). The cache coordination options appear on the tab.

   Figure 91-7 Cache Coordination Tab, Announcement Delay Field

   Description of "Figure 91-7 Cache Coordination Tab, Announcement Delay Field"

4. Select the amount of time (in milliseconds) that this session should wait between the time that it is available and the time that it broadcasts its announcement message to the members of the coordinated cache.