Difference between waiting occupied buffer and read by the wait of the other session in 10g

Hello

Can someone let me know the difference between waiting occupied buffer and read by other session wait in 10g

Thank you

http://download.Oracle.com/docs/CD/B19306_01/server.102/b14237/waitevents003.htm#sthref2988


buffer busy waits

Wait that a buffer becomes available. This event occurs because a buffer is either be read in the buffer cache by another session (and waiting for this reading end the session) or the buffer is the buffer cache, but in an incompatible mode (in other words, some other session changes the buffer).

http://download.Oracle.com/docs/CD/B19306_01/server.102/b14237/waitevents003.htm#sthref3159

read by another session

This event occurs when a session requested a buffer that is currently being read into the buffer cache by another session. Prior to version 10.1, expected for this event have been grouped with the other reasons for waiting for the buffers under the event "wait occupied buffer.

Tags: Database

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