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DataDirect Connect Drivers : Oracle Driver : Connection Properties : PortNumber
  
PortNumber
Purpose
The TCP port of the Oracle listener running on the Oracle database server.
This property is supported only for data source connections.
If using a tnsnames.ora file to provide connection information, do not specify this property. See Using tnsnames.ora Files for information about specifying a port number for the Oracle listener using a tnsnames.ora file.
Valid Values
port
where:
port
is the port number.
Default
1521
Data Type
int