Progress Sonic ESB Configuration and Management Guide

Microsoft SQL Server
Microsoft SQL Server Driver Connection Failover Properties
Table 18 summarizes the connection properties that control how connection failover
works with the Database Service SQL Server driver. See “Microsoft SQL Server Driver
Connection Properties” on page 190 for details about configuring each property.
Table 18. Connection Failover Properties for the Microsoft SQL Server Driver
Property Description
AlternateServers List of alternate database servers. An IP address or server name identifying each
server is required. Port number and supported connection properties (DatabaseName)
are optional. If the port number is unspecified, the port number specified for the
primary server is used. If a port number is unspecified for the primary server, the
default port number of 1433 is used.
ConnectionRetryCount Number of times the driver retries the list of database servers (primary and alternate)
until a successful connection is established. The default is 0 (connection retry is not
used).
ConnectionRetryDelay Wait interval, in seconds, used between attempts to connect to a list of database
servers (primary and alternate) when the ConnectionRetryCount property is set to a
positive integer. The default is 3.
DatabaseName The name of the database to which you want to connect.
LoadBalancing Sets whether the driver will use client load balancing in its attempts to connect to the
list of database servers (primary and alternate). If client load balancing is enabled,
the driver uses a random pattern instead of a sequential pattern in its attempts to
connect. The default is false (client load balancing is disabled).
See “Client Load Balancing” on page 131 and “Connection Failover” on page 132 for
overviews of these features.
Specifying Alternate Servers for the Microsoft SQL Server Driver
The following connection URL for the Microsoft SQL Server driver specifies connection
information for the primary and alternate servers:
jdbc:progress:sqlserver://server1:1433;DatabaseName=TEST;
AlternateServers=(server2:1433;DatabaseName=TEST2,server3:1433;
DatabaseName=TEST3)
In this example:
....server1:1433;DatabaseName=TEST...
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