Documentation for JIRA 6.3 EAP developer (EAP) releases only. Not using this? See below:
(JIRA 6.2.x documentation | JIRA OnDemand documentation | earlier versions of JIRA)

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Background

JIRA needs to know what kind of database it will be using, in order to generate database tables of the correct data types, and to generate correctly formatted SQL. The database type is specified in the dbconfig.xml file at the root of your JIRA Home Directory. For example:

In this example, JIRA expects to use HSQLDB (JIRA's internal database used for evaluation purposes).

If you've got it wrong ...

If you forgot to edit the dbconfig.xml file (see the documentation), then follow these steps to recover:

1. Fix the type in dbconfig.xml

Refer to the relevant documentation for your database in the Connecting JIRA to a Database section.

2. Fix the database

Is this the first time you have run JIRA?

If so, the database has been created incorrectly. Specifically, table columns have been created with incorrect data types, and you will see warnings like these in the logs:

The solution is to drop (delete) and recreate the database. When next restarted with the correct data types, JIRA will recreate the tables correctly.

Upgrading JIRA?

This situation is potentially problematic, because the newer version of JIRA may have added tables or columns with incorrect data types to your existing database schema.

The safest solution is to start a new database, and import an XML backup made before the upgrade.

If for some reason, you cannot import an XML backup (eg. your upgraded instance has been in production for a few days and contains new data), it is generally possible to patch the database by hand with SQL 'alter table' statements. Please review the log files for information on what types JIRA expects, and what is actually present. JIRA will print this information every time it starts up. If in doubt, attach the logs and other relevant information to a support request on our support system.

Other situations

If this is not the first time JIRA has loaded, and you are not upgrading, you probably do not need to fix the data. After fixing the dbconfig.xml file, restart and check the logs for errors. If there are none, the database is fine.

Need help?

Please create a support request and attach the startup logs, your current dbconfig.xml file, and any other information relevant.

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