Chapter 2. Creating Directory Entries
36
• It is possible to enable it on a supplier server that contains only read-write replicas.
• With multi-master replication, enable the plug-in on just one supplier.
If the replication environment satisfies the all of those condition, you can enable the Referential
Integrity Plug-in.
1. Enable the Referential Integrity Plug-in as described in
Section 2.5.3, “Enabling/Disabling
Referential Integrity”
.
2. Configure the plug-in to record any integrity updates in the changelog.
3. Ensure that the Referential Integrity Plug-in is disabled on all consumer servers.
NOTE
Because the supplier server sends any changes made by the Referential Integrity
Plug-in to consumer servers, it is unnecessary to run the Referential Integrity Plug-in
on consumer servers.
2.5.3. Enabling/Disabling Referential Integrity
You can enable or disable referential integrity as follows:
1. Start the Directory Server Console. See
Section 1.4, “Starting the Directory Server Console”
.
2. Select the
Configuration
tab.
3. Expand the
Plugins
folder in the navigation tree, and select
Referential Integrity Postoperation
Plug-in
from the list.
The settings for the plug-in are displayed in the right pane.
4. Check the
Enable plugin
checkbox to enable the plug-in; clear it to disable it.
5. Click
Save
.
6. For your changes to be applied, go to the
Tasks
tab, and select
Restart the Directory Server
.
2.5.4. Modifying the Update Interval
By default, the server makes referential integrity updates immediately after a delete or a
modrdn
operation. To reduce the impact this operation has on your system, increase the amount of time
between updates. Although there is no maximum update interval, the following intervals are commonly
used:
• Update immediately
• 90 seconds
• 3600 seconds (updates occur every hour)
• 10,800 seconds (updates occur every 3 hours)
• 28,800 seconds (updates occur every 8 hours)
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