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Chapter 9. Tuning Database Link Performance
Database link performance can be improved through changes to the Directory Server's connection and thread management.
9.1. Managing Connections to the Remote Server
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Each database link maintains a pool of connections to a remote server. This section describes how to optimize them.
9.1.1. Managing Connections to the Remote Server Using the Command Line
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This section describes how you update the settings for a specific database, as well as the default settings.
9.1.1.1. Updating the Database Link Connection Management Settings for a Specific Database
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To update the database link connection management settings for a specific database:
- Use the following command to update a setting for a database link:
# dsconf -D "cn=Directory Manager" ldap://server.example.com chaining link-set parameter=value link_nameFor a list of parameters you can set, enter:# dsconf -D "cn=Directory Manager" ldap://server.example.com chaining link-set --help - Restart the Directory Server instance:
# dsctl instance_name restart
9.1.1.2. Updating the Default Database Link Connection Management Settings
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To update the default database link connection management settings, use the following command:
# dsconf -D "cn=Directory Manager" ldap://server.example.com chaining config-set-def parameter=value
For a list of parameters you can set, enter:
# dsconf -D "cn=Directory Manager" ldap://server.example.com chaining config-set-def --help9.1.2. Managing Connections to the Remote Server Using the Web Console
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This section describes how you update the settings for a specific database, as well as the default settings.
9.1.2.1. Updating the Database Link Connection Management Settings for a Specific Database
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To update the database link connection management settings for a specific database:
- Open the Directory Server user interface in the web console. For details, see Logging Into Directory Server Using the Web Console section in the Red Hat Directory Server Administration Guide.
- Select the instance.
- On the tab, select the database link configuration you want to update.
- Click Show Advanced Settings.
- Update the fields in the advanced settings area:
To display a tooltip and the corresponding attribute name in thecn=configentry for a parameter, hover the mouse cursor over the setting. For further details, see the parameter's description in the Red Hat Directory Server Configuration, Command, and File Reference.. - Click .
- Click the button, and select Restart Instance.
9.1.2.2. Updating the Default Database Link Connection Management Settings
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To update the default database link connection management settings:
- Open the Directory Server user interface in the web console. For details, see Logging Into Directory Server Using the Web Console section in the Red Hat Directory Server Administration Guide.
- Select the instance.
- On the tab, select Chaining Configuration.
- Update the fields in the Default Database Link Creation Settings area:
To display a tooltip and the corresponding attribute name in thecn=configentry for a parameter, hover the mouse cursor over the setting. For further details, see the parameter's description in the Red Hat Directory Server Configuration, Command, and File Reference.. - Click .
- Click the button, and select Restart Instance.
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