Postgresql

PostgreSQL is renowned for its robustness, scalability, and flexibility, making it one of the most powerful relational database management systems available today. However, like any complex software, even the best PostgreSQL setups can encounter performance issues, slow queries, or unexpected failures. Whether you’re managing a mission-critical application or a high-traffic web service, understanding how to …

PostgreSQL’s Write-Ahead Logging (WAL) system plays a crucial role in ensuring data integrity and enabling features like replication and point-in-time recovery. However, WAL files can sometimes fail to be deleted, leading to excessive disk space consumption. In this article, we will explore three common reasons why WAL files might not be deleted in PostgreSQL and …

Ever wondered how companies like Instagram and Reddit manage millions of data points seamlessly? Behind many successful applications lies PostgreSQL, the open-source database powerhouse that’s been quietly shaping the digital world for over 30 years. Unlike your everyday spreadsheet, PostgreSQL  is like having a highly organized librarian who not only stores your data but ensures …

Optimizing the PostgreSQL database server’s performance heavily relies on adept memory management. The server’s behavior is governed by settings in the postgres.conf file. While default parameter values are provided, customizing these to align with specific workloads and operational environments can significantly boost efficiency. Understanding PostgreSQL’s Memory Architecture PostgreSQL categorizes memory into two distinct types: Local …

In PostgreSQL, the `search_path` is a configuration parameter that determines which schemas the system will check and in what order when an object (like a table or a function) is referenced by a simple, unqualified name. By default, the `search_path` is set to `$user, public`, which means the system will first look for objects in …

The error “could not load server certificate file ‘server.crt’: No such file or directory” in PostgreSQL indicates that the server is unable to find the server.crt file, which is required for SSL connections. If you don’t need that, set “ssl = off”, then PostgreSQL won’t complain. If you want transport encryption with TLS, you have …

Enabling SSL in PostgreSQL is a straightforward process that only requires three simple steps: Make sure we have the server certificate and key files available Enable the SSL configuration (ssl = on) Make sure the pg_hba.conf file rules are updated accordingly   Obtain server certificate and key files for Postgres On PostgreSQL server, we need …

When running the \dt command in PostgreSQL, the error message “Did not find any relations” means that no tables were found in the current schema that is visible to the user running the command. In PostgreSQL, the \dt command is used to list all the tables in the current schema. If the command is executed …

Get table size with pg_relation_size in Postgres PostgreSQL provides a dedicated function, pg_relation_size, to compute the actual disk space used by a specific table or index. We just need to provide the table name. To check the size of a table in a PostgreSQL database, you can use the following SQL query: select pg_size_pretty(pg_relation_size(‘table_name’)); Replace …

If you’re a PostgreSQL user or developer, you may often need to monitor the size of your database to manage storage resources efficiently. One crucial aspect of this monitoring is checking the disk size of your database. In this post, we will explore how to get the disk size of a database in PostgreSQL. We …