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Re: DBWn performs batched (multiblock) writes to improve efficiency

From: Mladen Gogala <>
Date: Wed, 21 Apr 2004 17:57:00 -0400
Message-ID: <>

On 04/21/2004 05:26:44 PM, Tanel P?der wrote:
> Thanks Mladen,

> Btw, what do you mean by "seeing" complete server side code in VMS?

Run/debug would show me all the assembly language calls, with the routine names included. There was also a trick with set watch, which would intercept I/O calls. VMS was the bes OS for hacking that I've ever seen. Even Steve Adams still uses VMS terminology in his 8i internals book ("blocking AST" and "non-blocking AST" couldn't be more revealing. Steve Adams is a VMS guy at his heart, as much as Bruce Ellis or Clay Prestia). The monitor that VMS has had is still unsurpassed today. Top, sar, vstat and iostat can give you just a pale shade of what mon/pag mon swap, mon io/item=queue and mon locks used to give you. System admin (he was called a "system engineer") was a divine creature and he was always right. Ah, those were the days, my friends. The difference between Unix and VMS is the same as the difference between the Joan Baez, Kingston Trio or Peter, Paul and Mary on one side and Eminem on the the other.
Hang down your head Tom Dooley, hang down your head and cry, because VMS is about to die.

Mladen Gogala
Oracle DBA

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Received on Wed Apr 21 2004 - 16:54:02 CDT

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