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Meaning of the lines CPU cores and 99th percentile in Average Activ Session

1001046Apr 18 2013 — edited Apr 18 2013

Hi,

I´m monitoring a 11g database with OEM. I have a couple of questions regarding the Average Active Sessions chart:

- What does the line 'CPU core' means? The DB is running in a virtual server with 8 CPUs. However, the line 'CPU core' is in 1. Does it mean that Oracle is just using 1 CPU?

- What represents the '99th percentile' line? The chart shows several sessions above that line, something is not working well, isn't it?

I would really appreciate your help.

Thanks,

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Locked on May 16 2013

Added on Apr 18 2013

#general-database-discussions, #oem, #oracle, #performance

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