Success is about Imagination

Here are  the tuning metrics tables (SQL  stats are not in “metric” tables per say) (*DBA_HIST_…_HISTORY views are sort of confusing....

Here is a quick table comparison of  different types of metrics views The first line of the table is the classic wait event and statistic...

Primary/Unique Key: inserting a unique key when  someone else has already inserted that key but not committed Foreign Key: Inserting a...

db file sequential read db file scattered read log file parallel write direct path reads direct path reads temp Of course it would be...

Anyone who has been around Oracle performance over the years knows the grief that hard parsing SQL queries can cause on highly concurrent...

Image from Bertrand Drouvot UPDATE: thanks to a discussion in the comments it’s come to my attention that there should be some more...

Here is my list and everything on this list is excellent. I’m sure I missed a few good ones, but maybe people can add them in the...

How do we know where latency comes from when  there is a disparity in reported I/O latency on  the I/O subsystem and that of the latency...

Oracle has a crazy mix of units of time in various v$ views seconds centi-seconds milliseconds microseconds Some are straight forward...