Re: lose data during system crash

Hi, Charles:

Of course, it depends on the frequency of updating these "next numbers" and also, whether this is done in interactive jobs, or in batch, etc., and this must be weighed against the additional cost of recovery when they have to deal with and "clean up" these "duplicate" records, as is the case now, after a failure has occurred. (Like most things to do with "performance", there are always "trade-offs".)

Note that I did not suggest changing FRCRATIO for ALL files, but only for this "next number" master file.

This is exactly why IBM added support for FRCRATIO.

Regards,

Mark S. Waterbury

> Wilt, Charles wrote:

Note that changing FRCRATIO will impact performance negatively.

It's not usually the "right" answer.

Charles

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Lim Hock-Chai
Sent: Monday, October 29, 2007 5:24 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: lose data during system crash

Thanks Scott, that explain the cause of problem. I didn't know that there are two layers of memory involved.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Scott Klement
Sent: Monday, October 29, 2007 4:20 PM
To: RPG programming on the AS400 / iSeries
Subject: Re: lose data during system crash

Blocking controls how often RPG sends the records from it's memory to the database's memory.

FRCRATIO controls how often the database software writes it's memory to disk.

Lim Hock-Chai wrote:

Hhmmm. Reading the help text on the command, I guess that is the problem. The file has FRCRATIO(*NONE). Here is the part that I'm confused about. In RPG, data blocking(buffering) should

only happen

if file is opened with output only. This RPG program is

opening this

file with UPDATE only. Did I missing something?

--
This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives at http://archive.midrange.com/rpg400-l.


--
This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives at http://archive.midrange.com/rpg400-l.

This e-mail transmission contains information that is intended to be confidential and privileged. If you receive this e-mail and you are not a named addressee you are hereby notified that you are not authorized to read, print, retain, copy or disseminate this communication without the consent of the sender and that doing so is prohibited and may be unlawful. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please delete and otherwise erase it and any attachments from your computer system. Your assistance in correcting this error is appreciated.