This question is in reference to Atlassian Documentation: Using the database integrity checker
There is no 'Integrity Checker' in a 'TROUBLESHOOTING AND SUPPORT' menu of the Settings page.
Only ''Audit Log" present.
The documentation you are linking to is for JIRA server, but by the look of the tags, you are using the cloud version which might not have this functionality (as this is done by Atlassian for you).
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