Re: Weird database hanging -- OPEN_CURSORS

  • From: Hemant K Chitale <hkchital@xxxxxxxxxxxxxx>
  • To: don@xxxxxxxxx, oracle-l@xxxxxxxxxxxxx
  • Date: Thu, 20 Sep 2007 09:51:21 +0800


The init.ora parameter OPEN_CURSORS  is for each session
-- ie it is a limit on the number of cursors a session may have open
concurrently.
At the database instance level, you could have many more cursors
open (the limit is your shared_pool and available free space fragments
in the shared_pool), most of which would be "open"ed by multiple
sessions concurrently.

Hemant
At 01:45 AM Thursday, Don Seiler wrote:
I'm also seeing this in EM dbcontrol regarding the number of open cursors:

Statistics for Last 24 Hours
Last Known Value        15743.28
Average Value   7096.27
High Value      22405
Low Value       0

My OPEN_CURSORS parameter is set to 700.  I'd like to know how these
numbers all jive.



Hemant K Chitale
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