Could not update Flowable database schema: unknown version from database: '6.6.1.0'

Flowable Engine
#1

Hello,

I already read similar topics.

It looks like the reason is that flowable db version (accessible through ACT_GE_PROPERTY) is currently 6.6.1 while my flowable-spring-boot-starter is 6.6.0.

The issue is that flowable-spring-boot-starter 6.6.1 doesn’t exist.

Could you confirm that this is the core issue ?
How could I fix it ? I don’t find a way to change the db version to 6.6.0.

Thanks,
Kilian

#2

If you’re getting that exception, it means that you’ve ran a newer version of Flowable and then reverted back to an older version. The only way to fix that is to figure out which version you ran before and apply the reverse changes (which is not automatic).

#3

Could I just drop the entire schema and rerun some scripts to install the DB? I am trying to get Flowable installed in an openshift environment with a distributed workload. I have a feeling it is causing db locking issues when the application is attempting to start up.

So I set the flowable:
  database-schema-update: false

Like so ^^^
but then I get this error:

Could not update Flowable database schema: unknown version from database: '6.7.2.3'

#4

That particular exception means that another, newer version is already installed. In a multi-node setup, each node will try to get a lock first before attempting the schema update, so two or more nodes trying to do the same upgrade can’t happen.