* PostgreSQL does not support many open-source applications compared to the MySQL database.
* In PostgreSQL, creating replication is a bit complex which reduces its popularity.
* The speed and performance of PostgreSQL are not as good as compared to some other databases and tools.
* PostgreSQL is not maintained by one company. This may be one of its drawbacks.
* It is slower as compared to the MySQL database.
* It is not popular as MySQL, so the installation process is sometimes not easy for beginners.
