KB485759: “pg_ctl: could not start server” error occurs when try to start PostgreSQL Repository using “mstr_pg_ctl start” post upgrade to MicroStrategy 2021 Update 7
![Debian & PostgreSQL - [ASSERT] Assertion failed for PostgreSQL Cluster 14 - Unix & Linux Stack Exchange Debian & PostgreSQL - [ASSERT] Assertion failed for PostgreSQL Cluster 14 - Unix & Linux Stack Exchange](https://i.stack.imgur.com/pUBqV.png)
Debian & PostgreSQL - [ASSERT] Assertion failed for PostgreSQL Cluster 14 - Unix & Linux Stack Exchange
![Failed to start PostgreSQL database server - Unregistered Authentication Agent for unix-process [Solved] - Techglimpse Failed to start PostgreSQL database server - Unregistered Authentication Agent for unix-process [Solved] - Techglimpse](https://techglimpse.com/wp-content/uploads/2016/08/postgresql-error-message.png)
Failed to start PostgreSQL database server - Unregistered Authentication Agent for unix-process [Solved] - Techglimpse
![Install and Configure PostgreSQL - Task failed! - KodeKloud Engineer - KodeKloud - DevOps Learning Community Install and Configure PostgreSQL - Task failed! - KodeKloud Engineer - KodeKloud - DevOps Learning Community](https://kodekloud.com/community/uploads/db1265/original/2X/a/a97947feeaad7b93f40f4393c35faef213a58cd9.jpeg)
Install and Configure PostgreSQL - Task failed! - KodeKloud Engineer - KodeKloud - DevOps Learning Community
![Failed to start Pgsql tools service on MacOS · Issue #108 · microsoft/azuredatastudio-postgresql · GitHub Failed to start Pgsql tools service on MacOS · Issue #108 · microsoft/azuredatastudio-postgresql · GitHub](https://user-images.githubusercontent.com/18453697/54940154-29b38e80-4ef8-11e9-99b8-4128763cf4a4.png)
Failed to start Pgsql tools service on MacOS · Issue #108 · microsoft/azuredatastudio-postgresql · GitHub
KB485759: “pg_ctl: could not start server” error occurs when try to start PostgreSQL Repository using “mstr_pg_ctl start” post upgrade to MicroStrategy 2021 Update 7
![Postgres installation fails while setting up Single Server · Issue #2372 · DefectDojo/django-DefectDojo · GitHub Postgres installation fails while setting up Single Server · Issue #2372 · DefectDojo/django-DefectDojo · GitHub](https://user-images.githubusercontent.com/12944530/82123780-d0bc4f00-97b8-11ea-9161-51c54e50e882.png)
Postgres installation fails while setting up Single Server · Issue #2372 · DefectDojo/django-DefectDojo · GitHub
![centos7 - Postgres11 can't start when I changed its default data directory in CenoOS - Stack Overflow centos7 - Postgres11 can't start when I changed its default data directory in CenoOS - Stack Overflow](https://i.stack.imgur.com/Ku32F.png)