Can't able to start JIRA after upgrading it from 7.6.X to 8.4.X

Question

While upgrading Jira 7.6 to 8.4 we could not able to start upgraded Jira instance.

After checking the atlassian-jira.log file we got the following issue.

2019-10-31 05:33:38,767 JIRA-Bootstrap INFO [c.a.j.config.database.SystemDatabaseConfigurationLoader] Reading database configuration from D: \Atlassian\Application Data\JIRA\dbconfig.xml
2019-10-31 05:33:38,852 JIRA-Bootstrap INFO [c.a.j.config.database.DatabaseConfigHandler] Trying to get encrypted password from xml and decrypt it
2019-10-31 05:33:38,854 JIRA-Bootstrap INFO [c.a.j.config.database.DatabaseConfigHandler] Database password decryption not performed.
2019-10-31 05:33:38,940 JIRA-Bootstrap INFO [c.a.j.health.checks.CustomisedConfigurationsHealthCheck] Jira Home not found. Unable to perform health check. This is most probably a new install.
2019-10-31 05:33:38,944 JIRA-Bootstrap ERROR [c.a.jira.health.HealthChecks] JIRA can't create a lock for your jira.home directory
2019-10-31 05:33:38,944 JIRA-Bootstrap ERROR [c.a.jira.health.HealthChecks] Your jira.home directory D: \Atlassian\Application Data\JIRA can only be used by one running JIRA instance. This instance needs to create a lock to make sure another instance can't access the jira.home directory. Ensure JIRA has read and write access to the jira.home directory.
Review our documentation for more information on setting your JIRA home.
2019-10-31 05:33:39,112 JIRA-Bootstrap INFO [c.a.jira.startup.JiraStartupLogger] Running JIRA startup checks.
2019-10-31 05:33:39,112 JIRA-Bootstrap FATAL [c.a.jira.startup.JiraStartupLogger] Startup check failed. JIRA will be locked.
2019-10-31 05:33:39,192 JIRA-Bootstrap INFO [c.a.jira.startup.LauncherContextListener] Memory Usage:

Kindly let us know how to fix this issue.

Vickey Palzor Lepcha · Answer

I'd suggest you to kill all JIRA processes - do a fresh restart , ensure that your id has all permissions under JIRA filesystem and check the logs again as it restarts.

Also check catalina.out log.

rashmi.bisoi · Answer

We have cross checked the home directory path.

jira.home = D: \Atlassian\Application Data\JIRA

It's the exact path of Jira home directory.

Vickey Palzor Lepcha · Answer

Also, the user id that you used to upgrade - is it the same as the one that was used to initially install jira or if it is different - does it have all the required permissions under JIRA filesystem - application and home directory.