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The Connection pool of the user management engine (UME) improves the performance of requests to the LDAP directory servers. The pool is used to share server resources among requesting clients. Without connection pooling, each request to the LDAP directories causes a new connection to the directory server to be created and then released when the connection is no longer required. The overhead in creating and releasing these connections has adverse effects on performance. With connection pooling, connections are stored in pools after they have been established and are reused for subsequent requests.

A connection can have the following states:

  • Open

    In one of the following states:

    • In Use

      Open connection currently in use.

    • Idle

      Open connection available for reuse.

  • Closed

    No longer available for use.

The following figure illustrates which actions are possible on connections:

States of Connections in the LDAP Connection Pool


You can configure the behavior of the connection pool when you configure the data source. For more information, see Configuring the UME to Use an LDAP Directory as Data Source .