Oracle Performance Firefighting by Craig Shallahamer Get the book here
Craig Shallahamer's Blog	You were brought to this page based on an internet search and as a free service to Oracle DBAs. The text below is an except from the book, Oracle Performance Firefighting, written by Craig Shallahamer of OraPub, Inc. Figures and tables are not included on this page, only their reference. To order the book in either print or PDF form, click here. ©2009, 2010 by Craig Shallahamer. This is copyrighted material. Please—Out of respect for those involved in the creation of the book and also for their familes, we ask you to respect the copyright both in intent and deed. Thank you. ------------------------------- <p>* Increase the _log_io_size parameter. Changing this parameter to 2048 will ensure the typical 2,048, 512-byte operating size blocks will also generate a full 1MB write. p><p>* Use the commit write facility with both the batch and nowait options. With a full understanding of the potential risk of losing committed data, the commit write facility's batch option will specifically batch redo entries to maximize redo writing affectivity. Plus, the nowait option tells the log writer background process to write in asynchronous mode, which will most likely result in a near-immediate completion of writes. p><p>So, when one of the top wait events is log file parallel write, remember that there are a number of Oracle-focused solutions available to you. p> ©2009, 2010 by Craig Shallahamer. This is copyrighted material. Please—Out of respect for those involved in the creation of the book and also for their familes, we ask you to respect the copyright both in intent and deed. Thank you.	Know what's important before it's too late! OraPub's Performance Training is like no other... More Class Pics... Get student testimonials!