Adding a Publication Database. EnterpriseDB Multi-Master

Postgres Plus xDB Replication Server Multi-Master is an asynchronous replication system available for PostgreSQL® as part of EnterpriseDB’s Postgres Plus Solution Pack, and for EnterpriseDB’s Postgres Plus Advanced Server database product.

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Postgres Plus xDB Replication Server with Multi-

Master User’s Guide

Figure 65 - Register Publication Server dialog box

Click the Register button after you have filled in the fields. A Publication Server node appears in the replication tree of the xDB Replication Console. Expand the Publication

Server node to expose the SMR and MMR type nodes.

Figure 66 – Replication tree after registering a publication server

Continue to build the single-master replication system under the SMR type node.

5.2.2 Adding a Publication Database

The database in which publications are to reside must be identified to xDB Replication

Server. This is done by creating a publication database definition.

After the publication database definition is created, a Publication Database node representing that publication database definition appears in the replication tree of the

Postgres Plus xDB Replication Server with Multi-

Master User’s Guide xDB Replication Console. Publications that are to contain tables and views residing within this database can then be created under the Publication Database node.

You must enter database connection information such as the database server network address, database identifier, and database login user name and password when you create the publication database definition. The connection information is used by the publication server to access the publication tables and views when it performs replication.

Step 1: Make sure the database server in which the publication database resides is running and accepting client connections.

Step 2: Select the SMR type node under the Publication Server node. From the

Publication menu, choose Publication Database, and then choose Add Database.

Alternatively, click the secondary mouse button on the SMR type node and choose Add

Database. The Publication Service – Add Database dialog box appears.

Step 3: Fill in the following fields:



Database Type. Select Oracle, SQL Server, PostgreSQL, or Postgres Plus

Advanced Server for the type of publication database. For an Advanced Server

Oracle compatible installation, select the Postgres Plus Advanced Server option.

For an Advanced Server PostgreSQL compatible installation, select the

PostgreSQL option.



Host. IP address of the host on which the publication database server is running.



Port. Port on which the publication database server is listening for connections.



User. The publication database user name created in Step 1 of Section 5.1.2.



Password. Password of the database user.



Service ID (For Oracle). Enter the Oracle System Identifier (SID) of the Oracle instance running the publication database if the SID radio button is selected. Enter the net service name of a connect descriptor as defined in the

TNSNAMES.ORA

file if the Service Name radio button is selected.



Database (For Postgres or SQL Server). Enter the Postgres or SQL Server database name.

Postgres Plus xDB Replication Server with Multi-

Master User’s Guide

Figure 67 - Publication Service - Add Database dialog box

Step 4: Click the Test button. If Test Result: Success appears, click the OK button, then click the Save button.

Figure 68 - Successful publication database test

Key features

Asynchronous replication
Single-master and Multi-Master architecture
Cross-database replication
Flexible and easy to use
Supports PostgreSQL, Postgres Plus Advanced Server, Oracle, and SQL Server

Frequently asked questions

Postgres Plus xDB Replication Server supports PostgreSQL, Postgres Plus Advanced Server, Oracle, and SQL Server databases.

Postgres Plus xDB Replication Server supports single-master and multi-master replication models.

The key benefits include improved data availability, scalability, offloading reporting and business intelligence queries, and geographically localized data access.

Postgres Plus xDB Replication Server uses a publish-and-subscribe architecture, where data to be replicated is defined as a publication and other databases subscribe to it to receive copies of the data.

Use cases include offloading reporting and business intelligence queries, providing warm standby servers, running tests in parallel, migrating data, write availability, scalability, and localized data access.