Comments on: VB app connecting to Oracle database

By: VB app connecting to Oracle database (Q/A) | Seek The Sun Slowly

VB app connecting to Oracle database (Q/A) | Seek The Sun Slowly — Fri, 08 Jun 2012 07:13:37 +0000

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By: gcherer

gcherer — Tue, 22 Nov 2005 17:10:09 +0000

Often, the main controllable drag in this scenario is the dispatcher’s allocation of stubs to handle the task. Pre-allocated stubs saves some effort at the expense of some memory. Try MTS or consider a another tier between the client and server. The new tier would keep a few more or less constant logins, but keep track of which client is doing what. Using the new security facilities in 9i makes this very slick. In your case, the actual number of clients and transactions makes it hard to cost-justify far-sighted solutions. But, you would know whether your environment is growing or staying static. g’luck.

By: skovac

skovac — Thu, 03 Nov 2005 14:12:30 +0000

Thanks for yout thoughts. What prompted this was the following chunck from my statspack report. I searched for mathing sql and found out that it something that happens every time VB makes a connection.

CPU Elapsd
Buffer Gets Executions Gets per Exec %Total Time (s) Time (s) Hash Value
————— ———— ————– —— ——– ——— ———-
35,708,923 1,273 28,051.0 18.5 413.14 418.99 496609904
Module: WIP_Mover.exe
select * from (select null TABLE_CATALOG, idx.table_owner TABLE_
SCHEMA, idx.table_name TABLE_NAME, null INDEX_CATALOG, idx.owner
INDEX_SCHEMA, idx.index_name INDEX_NAME, null PRIMARY_KEY, deco
de(idx.uniqueness, ‘UNIQUE’, 65535, 0) UNIQUE_,null CLUSTERED,nu
ll TYPE, null FILL_FACTOR, idx.initial_extent INITIAL_SIZE, null

By: sheldonlinker

sheldonlinker — Wed, 02 Nov 2005 13:40:31 +0000

Leaving a connection open “costs” virtually nothing, in terms of system resources. Closing a connection is “cheap”, too. Establishing a connection is time-consuming. Best to leave the connection open.

—
Sheldon Linker
Linker Systems, Inc.
linkersystems.com
sol@linker.com
800-315-1174
+1-949-552-1904 from outside North America