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Title: Server upgrade
Source: [None]
URL Source: [None]
Published: Sep 5, 2010
Author: Neil
Post Date: 2010-09-05 15:30:44 by Pinguinite
Ping List: *4um Admin News*     Subscribe to *4um Admin News*
Keywords: None
Views: 452
Comments: 16

I'm conducting a server upgrade shortly. I don't expect any noticable outage, as these have gone smoothly in the past, but just in case.... Subscribe to *4um Admin News*

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Begin Trace Mode for Comment # 6.

#5. To: All, *4um Admin News* (#0)

Just upgraded the server OS again. This will be the last for quite a while. Next I'm going to revisit the DB cleaning program which didn't go right last time and gave 4um an outage hour or two. Maybe this time I'll place the dynamite more carefully.

Pinguinite  posted on  2010-09-12   3:20:56 ET  Reply   Untrace   Trace   Private Reply  

Next I'm going to revisit the DB cleaning program which didn't go right last time and gave 4um an outage hour or two. Maybe this time I'll place the dynamite more carefully.

Does the DB cleaning program erase discussions or archive them?

GreyLmist  posted on  2010-09-13   9:59:55 ET  Reply   Untrace   Trace   Private Reply  

#7. To: GreyLmist (#6)

Does the DB cleaning program erase discussions or archive them?

Neither. It gets rid of all the obscenities and foul, over the top insults that sometimes gets posted here.

Just kidding.

But it is neither, actually. The DB can slowly accumulate defects as time goes by. These are defects that in small numbers don't cause any problem as the whole mysql setup is rather robust and can work around them. But in a large DB, the defects can reach a point where the server starts to struggle to keep up. That's happened a few times and the result is essentially a server crash. So a regular DB scan and fix can repair those defects and avoid those outages.

It's interesting that mysql can work with these defects and still retain 100% data accuracy. Perhaps later versions of the server software will have this type of DB repair operations done constantly.

Pinguinite  posted on  2010-09-13 17:52:43 ET  Reply   Untrace   Trace   Private Reply  

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