Replicate DB2 for i Data to Multiple Databases via the CData Sync CLI

Always-on applications rely on automatic failover capabilities and real-time access to data. CData Sync for DB2 for i integrates live DB2 for i data into your mirrored databases, always-on cloud databases, and other databases such as your reporting server: Automatically synchronize with remote DB2 for i 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 DB2 for i data to one or many databases without any need to change your configuration.

Connect to DB2 for i 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>Server=myServer;Port=446;Database=myDatabase;User=myUser;Password=myPassword;</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>Server=myServer;Port=446;Database=myDatabase;User=myUser;Password=myPassword;</ConnectionString>
<ReplicateAll>False</ReplicateAll>
<NotificationUserName></NotificationUserName>
<DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString>
</CDataSync>

Prerequisites

Before setting up the DB2 for i source connector, configure DB2 for i for change data capture (CDC) using journal receivers. The following capabilities aren't supported in Sync:

• Remote journals or failover functionality.
• Large object types such as CLOB, XML, TEXT, and BLOB.

Authenticate to DB2 for i

Set the following required properties:

• Server: The address or host name of the DB2 for i server. The default server is localhost.
• Database: The name of your DB2 for i database.
• Port: The port number for your server. The default port is 446.
• User: The username that authenticates to the DB2 for i database.
• Password: The password that authenticates to the DB2 for i database.

For details on journal/schema selection and creating a CDC job, refer to the Help documentation.

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 DB2 for i API. The statement below caches and incrementally updates a table of DB2 for i data:

REPLICATE MyTable;

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

DB2iNativeSync.exe -g MySQLiteConfig.xml -f DB2iNativeSync.sql

Java

java -Xbootclasspath/p:c:\sqlitejdbc.jar -jar DB2iNativeSync.jar -g MySQLiteConfig.xml -f DB2iNativeSync.sql