Hi,
I am experiencing suddent high paging activities on my
database server on regular bases. I setup an performance
monitor Counter log to monitor the db performance, which
showed that the "Memery-Page/sec" counter jumped from an
average of 50 to 2000 or even more at aound the same time
each hour and "PhysicalDisk-Avg. Disk Queue Length" jumped
from 0.3 to 30 or 40. The high paging lasted for 1 or 2
minutes, then the performance came back to normal. I have
run the profiler to trace all the SQL Batches sent to the
server and I couldn't see any abnormal SQL running which
might have caused the paging. More strange is the
counter "Buffer Cache Hit ratio" had remained 99% all the
time, which indicated that the high paging activities were
not caused by database read and I had very little write
activities on the database when it happened.
The server is dedicated to SQL Server. The server
enviroment I am using is:-
Microsoft SQL Server 2000 - 8.00.194 Enterprise Edition
Windows NT 5.0 (Build 2195: Service Pack 4).
Have anyone experienced the same problem or known what
might have caused the problem.
Any suggestion is very much appreciated.
Cheers
Xiaobing
Try tracing those counters on a per-process basis. It'll point you toward
where the problem lies.
Tom
Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
SQL Server MVP
Columnist, SQL Server Professional
Toronto, ON Canada
www.pinnaclepublishing.com/sql
"xy" <xyu@.redfig.com> wrote in message
news:693901c4758f$069f8ff0$a601280a@.phx.gbl...
Hi,
I am experiencing suddent high paging activities on my
database server on regular bases. I setup an performance
monitor Counter log to monitor the db performance, which
showed that the "Memery-Page/sec" counter jumped from an
average of 50 to 2000 or even more at aound the same time
each hour and "PhysicalDisk-Avg. Disk Queue Length" jumped
from 0.3 to 30 or 40. The high paging lasted for 1 or 2
minutes, then the performance came back to normal. I have
run the profiler to trace all the SQL Batches sent to the
server and I couldn't see any abnormal SQL running which
might have caused the paging. More strange is the
counter "Buffer Cache Hit ratio" had remained 99% all the
time, which indicated that the high paging activities were
not caused by database read and I had very little write
activities on the database when it happened.
The server is dedicated to SQL Server. The server
enviroment I am using is:-
Microsoft SQL Server 2000 - 8.00.194 Enterprise Edition
Windows NT 5.0 (Build 2195: Service Pack 4).
Have anyone experienced the same problem or known what
might have caused the problem.
Any suggestion is very much appreciated.
Cheers
Xiaobing
Monday, March 26, 2012
Hight paging activities on the DB server
Labels:
activities,
bases,
database,
experiencing,
hight,
log,
microsoft,
monitor,
mydatabase,
mysql,
oracle,
paging,
performancemonitor,
regular,
server,
setup,
sql,
suddent
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