Flowable Engine Upgrade

Our application was running on flowable version 6.4.2 and we decided to upgrade to flowable version 6.5.0. We are using Java 8 with Spring Boot framework v2.2.1.RELEASE. Our database is Oracle 12c. After I upgraded the flowable version in the pom.xml file from 6.4.2 to 6.5.0, and ran the upgrade script from this site (https://github.com/flowable/flowable-engine/blob/master/distro/sql/upgrade/all/flowable.oracle.upgradestep.6.4.2.to.6.5.0.all.sql), I deployed the flowable web to Oracle Weblogic 12c.

If I start a new process, the flowable works fine. However, for all existing ongoing processes are not working at all. When I try to transit the flow, it throws me this exception deployment ‘476749f6-c1ee-11ea-9311-000c29c5dcb3’ didn’t put process definition ‘47d63869-c1ee-11ea-9311-000c29c5dcb3’ in the cache. One workaround was that I removed all existing data (ACT_RU_TASK, etc) and recreate the task. However it’s not ideal since we might want to upgrade the flowable version on production environment, and we can’t afford to remove existing data. May I know if there is any alternative solution for this?

Thank you.

This exception can happen only when the reading the definition and deploying it in memory didn’t put it in the cache. Which normally shouldn’t happen, unless there’s maybe massive contention on the cache. Are you using any custom or configured definition cache? Cause by default, the cache is unlimited in size.

Also: did you reboot the server after the upgrade?