Database Tuning (MOSC)

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Consideration when local PL/SQL packages access remote tables

edited Mar 6, 2012 6:10PM in Database Tuning (MOSC) 6 commentsAnswered
Hi.


I'm investigating about bad performance of  a web application.

Please tell me how to approach to improve it.

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1.We have one Oracle Database Server which has two instance.
 Instance(A) has Tables
 
 Instance(B) has PL/SQL Packages which access data of Instance(A) through DBLink

2.Asp.NET Web Application accesses PL/SQL Packages of Instance(B) by ODP.NET

3.Database Server CPU usage is often very high. And in tkprof of Instance(A)
we found Hard Parse has occured.
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