Connection information for alternate servers is specified using the AlternateServers property with either a connection URL through the JDBC Driver Manager or a JDBC data source. The value of the AlternateServers property is a string that has the format:

(servername1[:port1][;property=value][,servername2[:port2]
[;property=value]]...)

where:

servername1 is the IP address or server name of the first alternate database server, servername2 is the IP address or server name of the second alternate database server, and so on. The IP address or server name is required for each alternate server entry.

port1 is the port number on which the first alternate database server is listening, port2 is the port number on which the second alternate database server is listening, and so on. The port number is optional for each alternate server entry. If unspecified, the port number specified for the primary server is used.

property = value is the DatabaseName connection property. This property is optional for each alternate server entry. For example:

jdbc:datadirect:openedge://server1:2003;DatabaseName=TestServer;
User=test;Password=secret;
AlternateServers=(server2:2003;
DatabaseName=TestServer,server3:2003)

If you do not specify the DatabaseName connection property in an alternate server entry, the connection to that alternate server uses the property specified in the URL for the primary server. For example, if you specify DatabaseName=TestServer for the primary server, but do not specify the DatabaseName property in the alternate server entry as shown in the following URL, the driver tries to connect to the TestServer database on server1:

jdbc:datadirect:openedge://server1:2003;DatabaseName=TestServer;
AlternateServers=(server2:2003,server3:2003)