Liquibase exception lock

This issue usually presents itself after an interrupted upgrade.

In the logs you’d find entries similar to:

Lenses failed to start… liquibase.exception.LockException: Could not acquire change log lock.

To fix this issue, get console in the host running Lenses and execute the following commands :

wget https://h2database.com/h2-2019-03-13.zip
unzip h2-2019-03-13.zip
java -cp h2/bin/h2-1.4.199.jar org.h2.tools.Shell -url 'jdbc:h2:/data/storage/lensesdb;AUTO_SERVER=TRUE' -sql 'UPDATE DATABASECHANGELOGLOCK SET LOCKED=0'