# Flowable Database Exception **URL:** \ **Category:** Flowable Engine\ **Created:** [August 1, 2017, 9:49am UTC](https://forum.flowable.org/t/flowable-database-exception/797 "2017-08-01T09:49:57Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![sakshi](https://avatars.discourse-cdn.com/v4/letter/s/d78d45/32.png) [@sakshi](https://forum.flowable.org/u/sakshi)\ **Post date:** [August 1, 2017, 9:49am UTC](https://forum.flowable.org/t/flowable-database-exception/797/1 "2017-08-01T09:49:57Z")
I am getting this error when I run my program: **org.flowable.engine.common.api.FlowableException: Could not update Flowable database schema: unknown version from database: ‘6.1.2.0’** The version of my db in act\_ge\_property is 6.1.2.0 and the flowable - engine dependency in my pom.xml file is 6.1.0 I read in one of the blogs that these 2 versions should match. I’ve now downloaded Flowable 6.1.2 and added it in my pom.xml dependency. But I still get the same error. Thanks, Sakshi ---
**Author:** ![joram](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/joram/32/26_2.png) [@joram](https://forum.flowable.org/u/joram)\ **Post date:** [August 4, 2017, 8:24am UTC](https://forum.flowable.org/t/flowable-database-exception/797/2 "2017-08-04T08:24:51Z")
If you drop a later version of a jar into your project, it will upgrade the database to the latest version and you cannot go back to a previous version. But it’s odd you get that too when using the 6.1.2. Can you put the exact contents of the act\_ge\_property table here? ---
**Author:** ![sakshi](https://avatars.discourse-cdn.com/v4/letter/s/d78d45/32.png) [@sakshi](https://forum.flowable.org/u/sakshi)\ **Post date:** [August 11, 2017, 10:36am UTC](https://forum.flowable.org/t/flowable-database-exception/797/3 "2017-08-11T10:36:55Z")
Hi Joram, I had both the 6.1.0 and 6.1.2 jars in my build path . I removed the 6.1.0 jars and it works fine now.🙂 Thanks, Sakshi ---
**Author:** ![guaiguaihu](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/guaiguaihu/32/847_2.png) [@guaiguaihu](https://forum.flowable.org/u/guaiguaihu)\ **Post date:** [November 5, 2018, 2:55am UTC](https://forum.flowable.org/t/flowable-database-exception/797/4 "2018-11-05T02:55:55Z")
I am getting this error when I run my program,But all applications version is ‘6.3.1’.And when I change the database to oracle,it works well. Below is error log: Caused by: org.flowable.common.engine.api.FlowableException: Could not update Flowable database schema: unknown version from database: ‘6.4.0.0’ ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [November 5, 2018, 7:05am UTC](https://forum.flowable.org/t/flowable-database-exception/797/5 "2018-11-05T07:05:15Z")
@guaiguaihuas Joram said you must have used 6.4.0 locally and you can’t go back to 6.3.1. If you have tried running the provided WARs then a database located under `~/flowable-db` is used. ---
**Author:** ![guaiguaihu](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/guaiguaihu/32/847_2.png) [@guaiguaihu](https://forum.flowable.org/u/guaiguaihu)\ **Post date:** [November 6, 2018, 5:28am UTC](https://forum.flowable.org/t/flowable-database-exception/797/6 "2018-11-06T05:28:12Z")
Thank you very much!I’ve aware of that. ---
**Author:** ![syadav](https://avatars.discourse-cdn.com/v4/letter/s/8baadc/32.png) [@syadav](https://forum.flowable.org/u/syadav)\ **Post date:** [January 28, 2020, 9:22am UTC](https://forum.flowable.org/t/flowable-database-exception/797/7 "2020-01-28T09:22:55Z")
This issues is caused due to DB version, just delete the flowable-db from your local and then deploy the war again.