Java Memory Leak Analysis

-
This Article is not complete... It is in Progress -
Common Causes of Memory Leak : 
Memory Leak in your application can happen because following reasons -
(1) Bad Programming - 

  • Unnecessary creation of objects and holding their references for longer time, specially static objects. static objects gets memory in perm gen. 
  • Wrong configuration of EJB components.

(2) Server Configuration
  • Heap Setting
  • Thread Count
  • Garbage Collection Algorithm
(3) Less Resources (Physical Memory)
(4) Wrong use of Cache.


Approaches for Memory Leak Analysis :  
      There are couple of things that we can do-
  • Memory Profiling of application  - JProbe
  • Thread Dump Analysis - Eclipse Plugin 
  • Heap Dump Analysis - JMap Utility for capturing Heap Dump, IBM Heap Analyzer
  • Heap Object Dump analysis - Manual Code for analysis.
  • Monitoring of the System - Introscope (watch Memory and Thread usage graph), LeakHunter
Prevent Memory Leak : 
  • Choose GC algorithm carefully. Parallel GC with Mark and Sweep Collector (MSC) works fine in most of the cases.
Please leave your comments and suggestions below...
Reactions: 

Comments

Post a Comment

Popular posts from this blog

Ramoji Film City, Hyderabad, India

-
Image
Ramoji Film City Website : https://www.ramojifilmcity.com / Timing : 9:30 to 8pm all days Transport to/from Ramji film city:   You can book bus transport by Ramoji film city website, the fare is 350 Rs per person. There are buses on 3 routes. You can also go by Auto/Cab from Uber. There are many UBER cabs available for your return travel also. Ramoji Film City runs a service for guest who does not have booked transportation for return. Ramji film city  Tickets :    Basic package Adult ticket is 1150 Rs and kids 950 Rs, plus GST. Tip1: You have the option of selecting from two packages. If you are with elderly members or are going during summer days, try to get the star experience. Tip2: We booked our tickets via Paytm and got 75 Rs cashback. You can book it after reaching there also. Parking at Ramoji:   There is plenty of paid parking available. Clock room  at Ramoji :   At the entrance, they have a big clock room where you can put your luggage for nomina
Read more

Ashtavinayak Temples | 8 Ganpati Temples of Maharashtra | Details Travel Reviews

-
Image
Ashtavinayak Temples | 8 Ganpati Temples of Maharashtra Moreshwar Temple, Morgaon Shri Mayureshwar Mandir is located in Morgaon, about 80 kilometers from Pune city. The temple is the starting and ending point of a pilgrimage of eight revered Ganesha temples called Ashtavinayaka. Siddhivinayak Temple, Siddhatek Siddhivinayak Temple of Siddhatek is one of the Ashtavinayaka and the only Ashtavinayaka shrine in Ahmednagar district. The temple is located on the northern bank of the river Bhima on a hillock, surrounded by thick foliage of Babul trees. Ballaleshwar Temple, Pali Ballaleshwar temple is one of the eight temples of Lord Ganesha and the only incarnation of Ganesha that is known by his devotee’s name. Ballaleshwar Pali temple is situated between fort Sarasgad and the river Amba, at a distance of 30 km from Karjat in the Raigad district. Varadavinayak Temple, Mahad Varadvinayak Temple is located in Mahad village situated in Khalapur taluka near Karjat. The idol of t
Read more

Quick Refresh : Hibernate

-
Image
What is ORM? ORM stands for Object-Relational Mapping (ORM) is a programming technique for converting data between relational databases and object-oriented programming languages. Why do you need ORM tools like hibernate? The main advantage of ORM like hibernate is that it shields developers from messy SQL. Apart from this, ORM provides the following benefits: Improved productivity High-level object-oriented API Less Java code to write No SQL to write Improved performance Sophisticated caching Lazy loading Eager loading Improved maintainability A lot less code to write Improved portability ORM framework generates database-specific SQL for you Hibernate  is an Object-Relational Mapping(ORM) solution for JAVA. It is a powerful, high performance Object-Relational Persistence and Query service for any Java Application.Hibernate maps Java classes to database tables and from Java data types to SQL data types and relieve the developer from 95% of common d
Read more