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Replicate PostgreSQL Data to Multiple Databases via the CData Sync CLI
Replicate PostgreSQL data to disparate databases with a single configuration.
Always-on applications rely on automatic failover capabilities and real-time access to data. CData Sync for PostgreSQL integrates live PostgreSQL data into your mirrored databases, always-on cloud databases, and other databases such as your reporting server: Automatically synchronize with remote PostgreSQL data from Windows or any machine running Java.
You can use Sync's command-line interface (CLI) to easily control almost all aspects of the replication. You can use the CLI to replicate PostgreSQL data to one or many databases without any need to change your configuration.
Connect to PostgreSQL Data
You can save connection strings and other settings like email notifications in XML configuration files.
The following example shows how to replicate to SQLite.
Windows
<?xml version="1.0" encoding="UTF-8" ?>
<CDataSync><DatabaseType>SQLite</DatabaseType>
<DatabaseProvider>System.Data.SQLite</DatabaseProvider>
<ConnectionString>User=postgres;Password=admin;Database=postgres;Server=127.0.0.1;Port=5432;</ConnectionString>
<ReplicateAll>False</ReplicateAll>
<NotificationUserName></NotificationUserName>
<DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString>
<TaskSchedulerStartTime>09:51</TaskSchedulerStartTime>
<TaskSchedulerInterval>Never</TaskSchedulerInterval>
</CDataSync>
Java
<?xml version="1.0" encoding="UTF-8" ?>
<CDataSync><DatabaseType>SQLite</DatabaseType><DatabaseProvider>org.sqlite.JDBC</DatabaseProvider>
<ConnectionString>User=postgres;Password=admin;Database=postgres;Server=127.0.0.1;Port=5432;</ConnectionString>
<ReplicateAll>False</ReplicateAll>
<NotificationUserName></NotificationUserName>
<DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString>
</CDataSync>
To connect to PostgreSQL, set the Server, Port (the default port is 5432), and Database connection properties and set the User and Password you wish to use to authenticate to the server. If the Database property is not specified, the data provider connects to the user's default database.
Configure Replication Queries
Sync enables you to control replication with standard SQL. The REPLICATE statement is a high-level command that caches and maintains a table in your database. You can define any SELECT query supported by the PostgreSQL API. The statement below caches and incrementally updates a table of PostgreSQL data:
REPLICATE Orders;
You can specify a file containing the replication queries. This enables you to use the same replication queries to replicate to several databases.
Run Sync
After you have configured the connection strings and replication queries, you can run Sync with the following command-line options:
Windows
PostgreSQLSync.exe -g MySQLiteConfig.xml -f PostgreSQLSync.sql
Java
java -Xbootclasspath/p:c:\sqlitejdbc.jar -jar PostgreSQLSync.jar -g MySQLiteConfig.xml -f PostgreSQLSync.sql
