Migrate to Another Database

This document outlines how to migrate your data from your existing database to another database.

You should use this method when moving from the embedded DB to an external DB, or from one type of external DB to another (e.g. Oracle to Postgres). If you are simply moving your DB from one server to another you can just change the JDBC URL in <confluence.home>/confluence.cfg.xml (if you are using a direct JDBC connection) or in the definition of your datasource (if you are connecting via a datasource).

There are two ways you can perform the migration:

1. Method one is the standard procedure.
2. For large installations of Confluence using version 2.2 or later: If the total size of attachments on your installation exceeds 500MB, use method two.

Method One - Standard Procedure

Step One: Backing up your data

1. Create a backup of your existing data. This is done from the Administration Console. Instructions on how to create a backup can be found here.
2. Shut down and backup the Confluence Home Directory.
3. If you are already using an external database, please make a backup of it using the utilities that were installed with it.

Step Two: Configuring the Confluence Home Directory

1. Create a new Confluence Home Directory. You can place this directory anywhere you like and give it a name of your choice.
2. Open WEB-INF/classes/confluence-init.properties file in your Confluence installation and change the confluence.home property to point to this new Confluence Home Directory.

Step Three: Setting up the new database

Perform the database setup instructions for your database.

Step Four: Setting up Confluence with the new database

If your databases are not already configured for Confluence, refer to Database Configuration to setup your database access.

1. Make sure that the JDBC drivers for your database are available to the application server. If you don't already have the JDBC driver, please download one from here.
2. Make sure that your database is using a case-sensitive collation. Please see this issue for more details: http://jira.atlassian.com/browse/CONF-7917
3. If you are running the standalone version of Confluence, copy your JDBC database driver (a .jar file), into the confluence-install/common/lib folder.
4. Start up Confluence. You will see the Confluence Setup Wizard.
5. Select 'Custom Install'.
6. Select your database from the drop down list.
7. Select 'Direct JDBC' and then enter the details of the new database you want to migrate to.
   Read the documentation on the Setup Wizard for more detailed explanation.
8. When prompted, restore the contents of the backup you made in Step One into the new Confluence site

Your old Confluence data will now be imported to your new database.

Method Two - For large installations

Step One: Backing up your data

1. Before proceeding with these instructions please check that:
   • you are upgrading from at least Confluence version 2.2 and
   • your attachments are stored in the file system (not in your database).
     These instructions will not work if either of the above is not true.
2. From Confluence, go to Administration -> Backup & Restore and create a manual backup that excludes attachments.
3. Shut down and back up the Confluence Home Directory.
4. If you are already using an external database, please make a backup of it using the utilities that were installed with it.

Step Two: Configuring the Confluence Home Directory

1. Create a new Confluence Home Directory. You can place this directory anywhere you like and give it a name of your choice.
2. Open WEB-INF/classes/confluence-init.properties file in your Confluence installation and change the confluence.home property to point to this new Confluence Home Directory.

Step Three: Moving your attachments

Move the contents of your attachments directory from your old Confluence Home to your new Confluence Home.

Step Four: Setting up new database

Perform the database setup instructions for your database.

Step Five: Setting up Confluence with the new database

If your databases are not already configured for Confluence, refer to Database Configuration to setup your database access.

1. Make sure that the JDBC drivers for your database are available to the application server. If you don't already have the JDBC driver, please download one from here.
2. Make sure that your database is using a case-sensitive collation. Please see this issue for more details: http://jira.atlassian.com/browse/CONF-7917
3. If you are running the standalone version of Confluence, copy your JDBC database driver (a .jar file), into the confluence-install/common/lib folder.
4. Start up Confluence. You will see the Confluence Setup Wizard.
5. Select 'Custom Install'.
6. Select your database from the drop down list.
7. Select 'Direct JDBC' and then enter the details of the new database you want to migrate to.
   Read the documentation on the Confluence Setup Wizard for more detailed explanation.
8. When prompted, restore the contents of the backup you made in Step One into the new Confluence site.

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