Getting Nullpointer exception when upgrading jira

[pallavi_rajappa]

Upgrading jira from 6.4 to 7.0.10 version..but when accessing through browser getting attached error

[BHUSHAN PATIL]

Hi Pallavi,

It seems like there might be an issue with the upgrade process or compatibility between the versions and database during the upgrade from Jira 6.4 to 7.0.10.
Ensure that the database you are using is compatible with the version of Jira you're upgrading to. Review Atlassian's documentation for compatibility information between Jira 7.0.10 and your specific database version. You might need to update or migrate the database schema if it's not compatible.
you can try some additional steps:-

1. Shutdown Jira
2. Clear Cache and Directories:
   Remove contents from the specified directories:

   <jira-local-home>/plugins/.bundled-plugins
   
   <jira-local-home>/plugins/.osgi-plugins
   
   <jira_install>/work/* 
   
   <jira_install>/temp/* 

3. Restart Database service
4. Restart Jira:

Always perform upgrades on a test or staging environment first to identify and address any potential issues before applying the upgrade to the production environment.

Regards,
Bhushan

[pallavi_rajappa]

Thanks Bhushan for your reply.
Actually 7.0.x supports 12c whereas our current DB is 11g. So will upgrade our DB beforehand and then will give it a try. 

[pallavi_rajappa]

Hi,

Tried JIRA upgrade after upgrading DB to required 12c version. Still facing same issue.
Any support will be appriciated.

Thanks,

Pallavi R