How to resolve scheduler hsqldb issue

Installed the plugin and it would not enable.

Restarted Jira, and the plugin will not load:

org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Failed to obtain DB connection from data source 'TheScheduler-hsqldb': org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.hsqldb.jdbcDriver' [See nested exception: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.hsqldb.jdbcDriver']]

...but we have the hsql db jdbc driver:
[root@mi3-28 (13:05:22) /opt/atlassian/jira/logs]# ls -al /opt/atlassian/jira/lib/hs*
-rw-r--r-- 1 root root 641570 Jul 25 2011 /opt/atlassian/jira/lib/hsqldb-
[root@mi3-28 (13:05:39) /opt/atlassian/jira/logs]#
... running Jira 4.4
... Jira DB is Oracle
Any ideas?

2 answers

1 accepted


Version 2.6.2 is not compatible with Jira 4.4.

The lates version which is compatible with such version of Jira is TheScheduler 2.0

Before you install new version please remove entire content of directory:


Best Regards,

Lucas Kreczmer


Could you tell which version of our plugin you are using?

Have you installed any other version of our plugin before?

Could you send me content of the directory "<JIRA_HOME>/data/plugins/" packet as zip?

My mail:

Best Regards,

Lucas Kreczmer

Hi Lucas,

Thank you for taking a look.

I have sent an email to you with the plugins directory.

We are using version 2.6.2. We have never used the plugin before, but would really like to try it and use it if we can get it working.

Thanks again,


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