The problem is that it's another layer of software that you have to go through on the client side. I'm not exactly sure what happens inside the ODBC layer, but the developers here have recorded delays of from 1 to 60 seconds. Data mapping appears to be the issue, and the more columns there are the worse it gets. BTW: the same query run through SQL*Plus, Pro*C, or OCI is sub second in it's reply. Dick Goulet Senior Oracle DBA Oracle Certified 8i DBA -----Original Message----- From: thump604@xxxxxxxxxxx [mailto:thump604@xxxxxxxxxxx] Sent: Tuesday, March 23, 2004 4:18 PM To: oracle-l@xxxxxxxxxxxxx Subject: ODBC Can someone please expand on why using ODBC to query an Oracle database is not good in terms of performance? Mix is MS Access 97 and ODBC to Oracle 8174 Thanks -- - David Life is what happens while waiting or planning for the future. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------