Why the bundles reinstall needed after query syntax error ?

Issue

• We are having an issue when a bundle stops working for whatever reason and keeps giving the following message in the logs:

Failed to execute query "select * from USER where USERNAME = ?". Check the query syntax for correctness. See nested exception for details.

OR

DEBUG (qtp1704258817-201298 - /services/test/subscriber/profile/v1) [org.apache.camel.processor.Pipeline]  test-subscriber:get-user-profile-request-handler-route Message exchange has failed: so breaking out of pipeline for exchange: Exchange[Message: <ws:fault xmlns:ws="http://www.example.com/service/example/v1" xmlns:testcm="http://www.example.com/services/common/messaging/v1"><testcm:code><testcm:value>11111</testcm:value></testcm:code><testcm:message>Failed to execute query "select * from USER where USERNAME = ?". Check the query syntax for correctness. See nested exception for details.</testcm:message><testcm:role>SERVER</testcm:role><testcm:description>Failed to execute query "select * from USER where USERNAME = ?". Check the query syntax for correctness. See nested exception for details.</testcm:description></ws:fault>] Handled by the error handler.

• A reinstall of the bundle works fine. Is this a known issue of some sort with OpenJPA ?