The validator is unable to load the driver from the specified jar file

Question

Getting error :

Unable to load 'org.postgresql.Driver' from 'C:\Program Files\Atlassian\Confluence\confluence\WEB-INF\lib\postgresql-9.2-1002.jdbc4.jar', exiting.

Same thing with MySQL, do I need something special to be able to load the driver from the jar ?

James_64hx1y · Answer

I am having exactly the same problem in Confluence version 7.12.2.  My command line is:

java -jar cdc-plugin-validator-1.0.0.jar -installation "C:/Program Files/Atlassian/Confluence7122" -dbuser user -dbpassword pass -dburl jdbc:postgresql://localhost:5433/cluster3 -dbdriver org.postgresql.Driver -dbfile "C:/Program Files/Atlassian/Confluence7122/confluence/WEB-INF/lib/postgresql-42.2.18.jar

Did you find a solution?

Dirk Brutscher_s1cea2 · Answer

Same issue here, it's frustrating, because I'm unable to to debug this stupid error :-/

java -jar cdc-plugin-validator-1.0.0.jar -installation C:\Confluence -dbuser XXXXX -dbpassword XXXXX -dburl jdbc:postgresql://localhost:5432/confluence2 -dbdriver org.postgresql.Driver -dbfile C:\Confluence\confluence\WEB-INF\lib\postgresql-42.2.16.jar
Unable to load 'org.postgresql.Driver' from 'C:\Confluence\confluence\WEB-INF\lib\postgresql-42.2.16.jar', exiting

KC Integrations · Answer

I have exactly the same problem, however I am using postgresql database and using the example command line with my server details.

I have the correct postgresql jar file, but the tool doesn't find the org.postgresql.Driver class, which is clearly in the jar file.  Looks like a bug with this tool.

Has anyone got this tool to work?

How do developers verify Data Center compatibility?