Intermediate SQL Color Coded SQL, UNIX and Database Essays


How to freeze ORACLE database by strace

Sometimes when you trace things, you can discover some really interesting (and unexpected) stuff.

For example, here is a simple way to “freeze” your ORACLE database, which I “discovered” while tracing system calls in LGWR process (ORACLE on Linux 2.6.18 ×64).

13Feb/113 tool for Linux

A very brief update.

One of the smaller (and nicer) part of ORA_MEM package is utility that shows graphically what active db processes are doing at the moment … be it running SQL, accessing db object or waiting for something.

As an added benefit, it also shows some important OS statistics, such as process state or ‘spot’ CPU utilization for your database sessions.