Skip to main content

Welcome to DBA Master – Database Tips, Tricks, and Tutorials

Welcome to DBA Master ! This blog is dedicated to all things related to database administration , SQL optimization , and performance tuning . Whether you're a beginner or a seasoned DBA, you'll find practical guides, troubleshooting tips, and real-world tutorials to help you work smarter with data. What to Expect: SQL performance tuning tips Indexing strategies Backup and recovery best practices High availability and replication techniques Database creation, configuration, and setup Monitoring queries and scripts for proactive performance management Migration guides across different database platforms Security essentials and best practices Recommended tools for DBAs Real-world error fixes and how to solve them Stay tuned — exciting content is coming soon. Feel free to bookmark and share: www.dbamaster.com ! Thanks for visiting!
Post a Comment

What is PostgreSQL? Features, Advantages and History?

What is the PostgreSQL?

PostgreSQL is a object-relational database Management system. PostgreSQL is free and open source software. Its source code is available under PostgreSQL license, a liberal open source license. You are free to use, modify and distribute PostgreSQL in any form.

PostgreSQL supports advanced data types and advance performance optimization, features only available in the expensive commercial database, like Oracle and SQL Server. It supports both SQL for relational and JSON for non-relational queries.

PostgreSQL Features:

  1. User-defined types
  2. Table inheritance
  3. Locking mechanism
  4. Foreign key referential integrity
  5. Views, rules, sub query
  6. Auto Commit & Nested transactions (savepoints)
  7. Multi-version concurrency control (MVCC)
  8. Asynchronous and Synchronous replication
  9. Tablespaces
  10. Point-in-time recovery

PostgreSQL Advantages:

Open Source DBMS

Only PostgreSQL provides enterprise-class performance and functions among current Open Source DBMS with no end of development possibilities. Also, PostgreSQL users can directly participate in the community and post and share inconveniences and bugs.

Diverse Community

One of the characteristics of PostgreSQL is that there are a wide variety of communities. Regarding PostgreSQL as Open Source DBMS, users themselves can develop modules and propose the module to the community. The development possibility is superiorly high with collecting opinions from its own global community organized with all different kinds of people. Collective Intelligence, as some might call it, facilitates transmission of indigenous knowledge greatly within the communities.

Function

SQL functions called ‘Store Procedure’ can be used for server environment. Also, we support languages similar to PL/SQL in Oracle such as PL/pgSQL, PL/Python, PL/Perl, C/C++, and PL/R.

ACID and Transaction

PostgreSQL support ACID(Atomicity, Consistency, Isolation, Durability).

Diverse indexing techniques

PostgreSQL not only provides B+ tree index techniques, but various kinds of techniques such as GIN(Generalized Inverted Index), and GiST(Generalized Search Tree), etc as well.

Flexible Full-text search

Full-text search is available when searching for strings with execution of vector operation and string search.

Diverse kinds of replication

PostgreSQL supports a variety of replication methods such as Streaming Replication , Slony-I, and cascading.

Diversified extension functions

PostgreSQL supports different kinds of techniques for geographic data storage such as PostGIS, Key-Value Store, and DB Link.

History of PostgreSQL:

PostgreSQL was created at UCB (University of California at Berkeley) by a computer science professor named Michael Stonebraker. It was originally called Postgres.

It was started in 1986 by professor stonebreaker as a follow-up project and a post Ingres project to overcome with the problems of contemporary database system.

1977-1985: A project called INGRES was developed
1986-1994: POSTGRES
1994-1995: Postgres95
PostgreSQL 6.0 in 1996

Currently Supported Versions:

Version

Current minor

Supported

First Release

Final Release

17

17.4

Yes

September 26, 2024

November 8, 2029

16

16.8

Yes

September 14, 2023

November 9, 2028

15

15.12

Yes

October 13, 2022

November 11, 2027

14

14.17

Yes

September 30, 2021

November 12, 2026

13

13.2

Yes

September 24, 2020

November 13, 2025

 Check PostgreSQL Server Versions History

Click here
Labels:

Comments

Post a Comment

Popular posts from this blog

Oracle Database 19C Performance Tunning - PART 1

Advantages: 1. Improved Query Performance •    Optimized SQL execution plans lead to faster query response times. •    Reduces unnecessary full table scans and improves indexing strategies. •    Parallel execution tuning speeds up large data processing tasks. 2. Better Resource Utilization •    Efficient use of CPU, memory, disk I/O, and network resources. •    Reduces contention on Redo Logs, Undo Tablespaces, and Buffer Cache. •    Helps in load balancing across multiple instances in RAC (Real Application Clusters). 3. Increased System Scalability •    Ensures that the database can handle a growing number of users and transactions. •    Proper tuning allows scaling without degrading performance. •    Optimized parallel processing ensures better performance on multi-core servers. 4. Lower Infrastructure Costs •    Reduces the need for add...
Post a Comment
Read more

Oracle RMAN Backup And Restore

RMAN: (Oracle 8) RMAN (Recovery Manager) is a utility provided by Oracle Database to perform backup, restore, and recovery operations. It is a command line tool. Features of RMAN in Oracle 19c Comprehensive Backup Capabilities: Full and incremental backups. Block-level backups for efficient data storage. Archived redo log backups. Fast Recovery Area (FRA) integration for centralized backup storage. Efficient Recovery Options: Point-in-time recovery (PITR). Complete and incomplete recovery. Flashback database capabilities for quick undo of changes. Multitenant Database Support: RMAN fully supports container databases (CDBs) and pluggable databases (PDBs). Provides flexibility to back up and recover individual PDBs or entire CDBs. Automatic Space Management: Manages disk space in the FRA. Automatically deletes obsolete backups and archived logs. Data Deduplication and Compression: Backup optimization through block-level deduplication. Built-in compression algorithms to reduce storage req...
Post a Comment
Read more

Oracle 19c Database Software Installation in OEL8

 Pre-requisites for OS level:            Set the static IP Address     Disable the Firewall (systemctl stop firewalld & systemctl disable firewalld)     set SELINUX=permissive on /etc/selinux/config  ##Need to restart the server use init 6 Oracle Installation Pre-requisites Methods     Automatic Setup     Manual Setup      Automatic requisites Setup: (avoid step 1 to step 5): dnf install -y oracle-database-preinstall-19c Install the dependencies: curl -o oracle-database-preinstall-19c-1.0-2.el8.x86_64.rpm https://yum.oracle.com/repo/OracleLinux/OL8/appstream/x86_64/getPackage/oracle-database-preinstall-19c-1.0-2.el8.x86_64.rpm dnf -y localinstall oracle-database-preinstall-19c-1.0-2.el8.x86_64.rpm Manual Setup: step 1: Add the karenl parameters and values vi /etc/sysctl.conf     fs.file-max = 6815744 kernel.sem = 250 32000 100 128 kernel....
Post a Comment
Read more