Red Hat DIRECTORY SERVER 8.0, Administration Manual

Page: 92 / 552

Chapter 3. Configuring Directory Databases
74
3.3.6.1. Managing Connections to the Remote Server
Each database link maintains a pool of connections to a remote server. The connections to optimize
resources can be configured for the directory.
3.3.6.1.1. Managing Connections to the Remote Server Using the Console
1. In the Directory Server Console, select the
Configuration
tab.
2. Expand the
Data
folder in the left pane and locate the database link to change. Click the
database
link
, then click the
Limits and Controls
tab in the right navigation pane.
3. In the
Connection Management
section, make changes to any of the following fields:
•
Maximum TCP connection(s).
The maximum number of TCP connections that the database link
establishes with the remote server. The default value is
3
connections.
•
Bind timeout.
Amount of time, in seconds, before the database link's bind attempt times out. The
default value is
15
seconds.
•
Maximum binds per connection.
Maximum number of outstanding bind operations per TCP
connection. The default value is
10
outstanding bind operations per connection.
•
Time out before abandon (sec).
Number of seconds before the server checks to see if a timed-
out connection should be abandoned. The default value is
1
second.
•
Maximum LDAP connection(s).
Maximum number of LDAP connections that the database link
establishes with the remote server. The default value is
10
connections.
•
Maximum bind retries.
Number of times a database link attempts to bind to the remote server.
A value of
0
indicates that the database link will try to bind only once. The default value is
3
attempts.
•
Maximum operations per connection.
Maximum number of outstanding operations per LDAP
connection. The default value is
2
operations per connection.
•
Connection lifetime (sec).
How long a connection made between the database link and remote
server remains open. Connections between the database link and the remote server can be
kept open for an unspecified time or closed after a specific period of time. It is faster to keep the
connections open, but it uses more resources. For slow connections, it may be desirable to limit
the connection time. A value of
0
indicates there is no limit. By default, the value is set to
0
.
4. Click
Save
.
3.3.6.1.2. Managing Connections to the Remote Server from the Command Line
Use
ldapmodify
to add connection attributes to the database link entry.
The default connection management attributes are stored in the following entry:
cn=default instance config,cn=chaining database,cn=plugins,cn=config
The connection management attributes for a specific database link are stored in the following entry:
cn= database_link ,cn=chaining database,cn=plugins,cn=config