Database: Database connection failed

[Steve ten Have]

I updated confluence on my machine and now it won't start with the Database connection failed error. The contents of the atlassian-confluence.log is full of the following:

2018-08-15 21:25:06,854 WARN [C3P0PooledConnectionPoolManager[identityToken->1hge13x9xgr65m2f68yko|ec82954]-HelperThread-#1] [mchange.v2.resourcepool.BasicResourcePool] log com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@15495128 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
org.h2.jdbc.JdbcSQLException: General error: "java.lang.RuntimeException: rowCount expected 139699 got 135939 T187.I847" [50000-176]

[AhmadDanial]

Hi, Steve.

The error that you are experiencing here is similar to a question that was asked recently:

• Confluence Server doesn't start

May I know if it is possible for you to restore the last working backup that you have again as mentioned in the Site Backup and Restore? 

While you mentioned that this instance is yet to be migrated to an external database, is it going to happen any time soon? Looking forward to hear from you soon.

[Steve ten Have]

It's also worth noting that this is using the default local DB and has not yet been migrated to an external DB host.