× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  • Subject: Problems Caching and reusing JDBC CallableStatement objects
  • From: "Al Heitkamp" <Al.Heitkamp@xxxxxxxxxxxx>
  • Date: Fri, 14 Jul 2000 09:40:48 -0500

I have written an application that runs on the AS/400 and calls stored 
procedures using JDBC driver com.ibm.db2.jdbc.app.DB2Driver. My first release 
of the application created a new CallableStatement object each time I called a 
stored procedure. This has been working fine for some time now.

In an attempt to improve performance, I modified the application to cache the 
CallableStatement objects for each different stored procedure call, then 
reusing the CallableStatement object for subsequent stored procedure calls.  I 
am now getting the error *Conversion error on input host variable or parameter 
*N.* I returned to creating the new CallableStatement for every stored 
procedure call and the application works fine again. Caching the 
CallableStatements works fine against an Oracle database and improved 
performance by almost 10 percent.

Has anyone seen this problem before?  We are running V4R4 and JDK 1.1.7.

Thanks,

Al Heitkamp
H.B. Fuller Company
Arden Hills, MN



+---
| This is the JAVA/400 Mailing List!
| To submit a new message, send your mail to JAVA400-L@midrange.com.
| To subscribe to this list send email to JAVA400-L-SUB@midrange.com.
| To unsubscribe from this list send email to JAVA400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner: joe@zappie.net
+---

As an Amazon Associate we earn from qualifying purchases.

This thread ...


Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.