What is Bug priority vs Severity?

Bug priority is nothing but an indication of how important or urgent to get the bug fix.

Typically divided into five levels: P1 (highest), P2, P3, P4, P5 (lowest).

  • P1: Need immediate fix ( tests blocking) within 24hrs
  • P2: Need by next build (major functionality is not working)
  • P3: It is ok to wait but fix before release
  • P4/P5: It is not mandatory, it is ok to fix or not in the current release.

The bug filer would determine the priority and set while filing the bug. The thumb rule is to set the same priority as severity while filing the bugs. Example: P1/S1, P2/S2, P3/S3, P4/S4, P5/S5.

Note that anyone can change the bug priority and bug tools would allow that. Typically, changed after the conversations with stakeholders like release managers and product managers. Example: QA can file a bug, but Dev manager or product manager can change the priority.

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Author: Jagadesh Babu Munta

Jagadesh Babu Munta is working as a Consulting Member of Technical Staff with Oracle America Inc. He has been with Oracle and Sun Microsystems together for over 16 years (since June 2000) in USA. Jagadesh has overall 20+ years of Software development and quality/testing experience. Jagadesh's experience has been filled recently with Cloud PaaS services, Multi-Tenancy, Security and Penetration testing. In the past, he extensively worked on Java EE servers like SailFin/GlassFish/Sun Java System/iPlanet/Netscape Application Servers. Jagadesh has gained extensive expertise in software automation, designing frameworks, writing tools, scripts, creating tests, writing specs/plans, etc. Jagadesh is interested in developing and testing complex software useful to up-level the humanity. Jagadesh Munta holds M.S. in Software Engineering from San Jose State University, California, USA; B.Tech. in Computer Science and Engineering from J.N.T.U., Hyderabad, India; Special Diploma in Electronics with Specialization in Computer Engineering, G.I.O.E, Secunderabad, India. Jagadesh Munta was born in Nellore, AP., India and lives with family in Fremont, California, USA.

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