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I/O

Oracle I/O latency monitoring


stopwatchOne thing that I have found sorely missing in the performance pages of Enterprise Manager is latency values for various types of I/O. The performance page or top activity may show high I/O waits but it won’t indicated if the latency of I/O is unusually high or not. Thus I put together a shell script that shows latency for the main I/O waits

Latency Heat Maps in SQL*Plus

This is so cool !

Screen Shot 2013-05-10 at 1.13.15 PM

The above is so cool.

The graphic shows the latency heatmap of “log file sync” on Oracle displayed in SQL*Plus! SQL*Plus ?! Yes, the age old text interface to Oracle showing colored graphics.

How did I do this? All I did was type