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OPAQUE_TRANSFORM提示的产生
最近经常在AWR中看到带有OPAQUE_TRANSFORM提示的SQL语句，根据分析可以确认执行这个SQL的语句是通过数据库链连接到本地，但是测试时发现，普通的数据库链连接并不会导致这个提示的产生。 于是做了一个简单的例子： -bash-3.2$ sqlplus test/test SQL*Plus: Release 10.2.0.5.0 – Production ON Mon DEC 5 15:05:09 2011 Copyright (c) 1982, 2010, Oracle. ALL Rights Reserved. Connected TO: Oracle DATABASE 11g Enterprise Edition Release 11.2.0.2.0 – Production WITH the Partitioning, OLAP, DATA … Continue reading