22 SIP Data Tier Configuration Reference (datatier.xml)

The chapter describes the SIP data tier configuration file, datatier.xml:

Overview of datatier.xml
Editing datatier.xml
XML Schema
Example datatier.xml File
XML Element Description

Overview of datatier.xml

The datatier.xml configuration file identifies servers that manage the concurrent call state for SIP applications, and defines how those servers are arranged into SIP data tier partitions. A partition refers to one or more SIP data tier server instances that manage the same portion of the call state. Multiple servers in the same partition are referred to as replicas because they all manage a copy of the same portion of the call state.

datatier.xml is stored in the CAS_Home/config/custom subdirectory where CAS_Home is the root directory of Oracle Communications Converged Application Server.

Editing datatier.xml

You can edit datatier.xml using either the Administration Console or a text editor. Note that changes to the SIP data tier configuration cannot be applied to servers dynamically; you must restart servers in order to change SIP data tier membership or reconfigure partitions.

XML Schema

This schema file is bundled within the wlss-descriptor-binding.jar library, installed in the WLS_Home/server/lib directory.

Example datatier.xml File

Example 22-1 shows the template datatier.xml file created using the Configuration Wizard. See also "Example SIP Data Tier Configurations and Configuration Files" in Chapter 4, "Configuring SIP Data Tier Partitions and Replicas."

Example 22-1 Default datatier.xml File

<st:data-tier xmlns:st="http://bea.com/wcp/sip/management/internal/webapp">
 <st:partition>
   <st:name>partition-0</st:name>
   <st:server-name>replica1</st:server-name>
   <st:server-name>replica2</st:server-name>
 </st:partition>
</st:data-tier>

XML Element Description

datatier.xml contains one or more partition elements that define servers' membership in a SIP data tier partition. All SIP data tier clusters must have at least one partition. Each partition contains the XML elements described in Table 22-0.

Table 22-1 Nested partition Elements

Element Description

Element	Description
name	A String value that identifies the name of the partition. Oracle recommends including the number of the partition (starting at 0) in the text of the name for administrative purposes. For example, "partition-0."
server-name	Specifies the name of a Converged Application Server instance that manages call state in this partition. You can define up two three servers per `partition` element. Multiple servers in the same partition maintain the same call state data, and are referred to as replicas. Oracle recommends including the number of the server (starting with 0) and the number of the partition in the server name for administrative purposes. For example, "replica-0-0."

name

A String value that identifies the name of the partition. Oracle recommends including the number of the partition (starting at 0) in the text of the name for administrative purposes. For example, "partition-0."

server-name

Specifies the name of a Converged Application Server instance that manages call state in this partition. You can define up two three servers per partition element. Multiple servers in the same partition maintain the same call state data, and are referred to as replicas.

Oracle recommends including the number of the server (starting with 0) and the number of the partition in the server name for administrative purposes. For example, "replica-0-0."