Fix 'Not supported by BasicDataSource' Setup or Startup Error

Identifying the Error

You are running Tomcat 6
You are connecting to the database using a Tomcat-configured DataSource

Confluence will not start. During setup you see the following error message:

Setup Datasource Database Failed 
Setting up datasource database instance failed. You can either try it again 
or or go back to the database selection page:

Restart Database Setup
Setup Datasource Database Again

The following error(s) occurred: 
Configuring the database failed. Couldn't create the database schema. 
Could not open Hibernate Session for transaction; nested exception is 
java.lang.UnsupportedOperationException: Not supported by BasicDataSource 
Context initialization failed: Could not open Hibernate Session for 
transaction; nested exception is java.lang.UnsupportedOperationException: 
Not supported by BasicDataSource 
---------------------

Or, during start-up the following stack-trace is logged:

org.springframework.transaction.CannotCreateTransactionException: 
       Could not open Hibernate Session for transaction; 
       nested exception is java.lang.UnsupportedOperationException: Not supported by BasicDataSource
Caused by: java.lang.UnsupportedOperationException: Not supported by BasicDataSource
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:899)
        at net.sf.hibernate.connection.DatasourceConnectionProvider.getConnection
           (DatasourceConnectionProvider.java:56)
        at net.sf.hibernate.impl.BatcherImpl.openConnection(BatcherImpl.java:292)
        at net.sf.hibernate.impl.SessionImpl.connect(SessionImpl.java:3373)
        at net.sf.hibernate.impl.SessionImpl.connection(SessionImpl.java:3333)

Fixing the Error

Tomcat 6 does not allow applications to authenticate DataSource connections. You must make sure that you have supplied a username and password in the DataSource configuration in your Tomcat config files, for example:

<Resource name="jdbc/confluence" auth="Container" type="javax.sql.DataSource"
   username="cmiller"
   password="mysecret"
   driverClassName="org.postgresql.Driver"
   url="jdbc:postgresql://localhost/t6test"
   maxActive="20"/>

You should then:

Shut down Confluence
Open the confluence-cfg.xml file in your Confluence Home directory in a text editor
Delete the following lines if you find them:
- <property name="hibernate.connection.password">your-password</property>
- <property name="hibernate.connection.username">your-username</property>
Save the modified file
Restart Confluence

Fix 'Not supported by BasicDataSource' Setup or Startup Error

Identifying the Error

Fixing the Error

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