24 lines
731 B
MySQL
24 lines
731 B
MySQL
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-- -----------------------------------------------------------------------------------
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-- File Name : https://oracle-base.com/dba/monitoring/lru_latch_ratio.sql
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-- Author : Tim Hall
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-- Description : Displays current LRU latch ratios.
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-- Requirements : Access to the V$ views.
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-- Call Syntax : @lru_latch_hit_ratio
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-- Last Modified: 15/07/2000
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-- -----------------------------------------------------------------------------------
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SET LINESIZE 500
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SET PAGESIZE 1000
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COLUMN "Ratio %" FORMAT 990.00
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PROMPT
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PROMPT Values greater than 3% indicate contention.
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SELECT a.child#,
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(a.SLEEPS / a.GETS) * 100 "Ratio %"
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FROM v$latch_children a
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WHERE a.name = 'cache buffers lru chain'
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ORDER BY 1;
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SET PAGESIZE 14
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