How To Resolve Server Hang, Memory Leakage and Out Of Memory Issues

Below are the steps and tips that a production support engineer keep in mind :

• Gather memory leakage data by enabling GC verbose on deployment servers.

• If Application is in JAVA, then you make sure JSP page are with pre-compilation.

• For Web application, Check the deployment descriptor entries.

• HTTP session duration settings, Check for Auto Time out settings.

• Check JDBC Connection Pool Setting like initial and max no of connection with database with no by which it can increase.

• Look for code how developer is handing JDBC connection.

• Optimize Heap Size as per application load.

• High CPU utilization - This is the condition when a process is taking high portion of CPU. You may check that by top command of unix. you may kill it, if that is abnormal and not required to run.

• Monitor Garbage Collection

• Define Separate files for different logs

• Use Application log frameworks like log4j

• Use separate log files for Garbage collection per JVM.

• OS Chunk pool size

• OS Connection backlog buffering

• Use OS performance packs

• Setting OS TCP-IP parameters

• tcp_time_wait_interval

• tcp_conn_req_max_q