48 lines
1.3 KiB
MySQL
48 lines
1.3 KiB
MySQL
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-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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--------------------------------------------------------------------------------
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--
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-- File name: demos/kghupr1.sql
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--
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-- Purpose: Advanced Oracle Troubleshooting Seminar demo script
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--
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-- Author: Tanel Poder ( http://www.tanelpoder.com )
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--
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-- Copyright: (c) 2007-2009 Tanel Poder
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--
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--------------------------------------------------------------------------------
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col laddr new_value laddr
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col wordsize new_value wordsize
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alter system flush shared_pool;
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select addr laddr, vsize(addr) wordsize
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from v$latch_children
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where gets + immediate_gets >= (
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select max(gets+immediate_gets)
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from v$latch_children
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where name = 'shared pool'
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)
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and name = 'shared pool'
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/
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-- oradebug watch 0x&laddr &wordsize self
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alter session set session_cached_cursors = 0;
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alter session set "_close_cached_open_cursors"=true;
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prompt Running lots of soft parses. Use latchprofx on my SID in another session
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declare
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x number;
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begin
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for i in 1..10000000 loop
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execute immediate 'select count(*) from dual where rownum = 1';
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end loop;
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end;
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/
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col laddr clear
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col wordsize clear
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