PostgreSQL Interview Q&A Part-3 Before going into the article, please check our previous article on PostgreSQL Q&A Part-2 1. Can we have different data directories for PostgreSQL Cluster? Under One PostgreSQL installation, you can create multiple Clusters. Each Cluster will have its own data directory. One… Read More
PostgreSQL Interview Q&A Part-2 Before going into the article, please check our previous article on PostgreSQL Q&A Part-1 1. What are template0 & template1 databases? As the name suggests, these are template databases that come by default with the Installation. In a fresh installation, both… Read More
PostgreSQL Interview Q&A Part -1 PostgreSQL is a free and open-source relational database management system emphasizing extensibility and SQL compliance. The frequently asked questions from PostgreSQL database are given below. 1.Difference between Alert log in Oracle and Error log in PostgreSQL? Error log to PostgreSQL is… Read More
WAL Internals in PostgreSQL Write-Ahead Log (WAL) is a very important term in transaction processing. In PostgreSQL, it is also known as a transaction log. A log is a record of all the events or changes and WAL data is just a description of changes… Read More
Data Fragmentation in PostgreSQL PostgreSQL is a relational database management system with a client-server architecture. At the server-side, PostgreSQL’s processes and shared memory work together and build an instance, which handles the access to the data. Client programs connect to the instance and request read… Read More
Replication to GCP PostgreSQL Using Oracle GoldenGate Use Case: Real-time replication of transactional data from an on-premises database to GCP Managed PostgreSQL instance using GoldenGate. Architecture: Source Database (Source Database can be any GoldenGate supported databases) Oracle GoldenGate (OGG) 19c/18c/12c for extraction from Source DB… Read More
