Random ClassNotFoundExceptions/"xxxConnector can not be found" when executing Connectors

Submitted by info_845 on Fri, 05/15/2015 - 09:19
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Currently we run a Bonita Community-Server 6.3.8. When executing connectors sometimes there is an org.bonitasoft.engine.core.connector.exception.SConnectorException with message "xxxxxxxConnector can not be found.", e.g.

     "org.bonitasoft.connectors.database.jdbc.JdbcConnector can not be found."

and the executing task switches to failed state and stops.

The error happens by chance, but several times per day, compared to the number of connector-executions it happens not often. When the error appears, it hits random nodes and different connectors (MailConnector, JdbcConnector, WebserviceConnector ...) each time. The affected connectors are the standard connectors included in bonita installation. According to the Bonita-sources a ClassNotFoundException might log that message when loading a connector.

How can we fix that errors?

Thanks

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