Configuring DNS SRV Records for use with Dynamic OID Server Discovery (Doc ID 1363773.1)

Last updated on OCTOBER 12, 2011

Applies to:

Oracle Net Services - Version: 10.1.0.5 to 11.2.0.3 - Release: 10.1 to 11.2
Information in this document applies to any platform.

Goal

When adding OID SRV records to DNS an OID specific format should be used. Using the OID format isolates OID servers from other ldap services that are in DNS and allows for better management of OID specific SRV record priority and weight values.

An Oracle client performing a name lookup will search DNS for SRV records in the following order:

1) _ldap._tcp._oid.domain  2) _ldaps._tcp._oid.domain

3) _ldap._tcp.domain       4) _ldaps._tcp.domain

If an OID formatted SRV record is found the DIR_SERVER_TYPE is set to "OID". If a standard SRV record is found then the DIR_SERVER_TYPE will be set to "UNKNOWN".  The client will retrieve both the _ldap and _ldaps records for the determined type.

For more information about OID server discovery and SRV record priority and weighting see note 250675.1 "Dynamic OID Server Discovery using DNS"

The following example shows how to create OID formatted SRV records using Server Manager Console on Windows Server 2008.

Solution

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