Progress Sonic 8.0 ESB Configuration and Management Guide

Table 14. Connection Properties for the Oracle Driver
Property Description
AlternateServers
OPTIONAL
Oracle
A comma-separated list of alternate database servers that the driver will
try to connect to if the primary database server is unavailable. The value
of this property is a string that specifies each alternate server. This string
has the format:
(servername1[:port1][;property=value[;...]],
servername2[:port2][;property=value[;...]],...)
The server name is required for each alternate server entry. Port number
and connection properties (property=value) are optional for each
alternate server entry. If the port is unspecified, the port number of the
primary server is used. If the port number of the primary server is
unspecified, the default port number of 1521 is used. Optional connection
properties are ServiceName and SID. For example:
jdbc:datadirect:oracle://server1:1521;
ServiceName=TEST;AlternateServers=(server2:1521;
ServiceName=TEST2,server3:1521;ServiceName=TEST3)
contains alternate server entries for server2 and server3. The alternate
server entries contain the optional ServiceName property. Similarly, you
can use the optional SID property instead.
Other properties include:
● ConnectionRetryCount — Controls the number of times the driver
retries the list of servers (primary and alternate) while attempting to
establish a connection.
● ConnectionRetryDelay — Sets the wait interval, in seconds, between
retry attempts.
● LoadBalancing — Controls the order in which the driver sequences
through the list of servers (primary and alternate) while attempting
to establish a connection.
If using a tnsnames.ora file to retrieve connection information, do not
specify this property.
See “Specifying Primary and Alternate Servers” on page 126 for more
information about specifying connection information for primary and
alternate servers.
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