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Home -> Community -> Mailing Lists -> Oracle-L -> RE: What to check?
All three machines having the same amount of CPUs and memory, and he uses
the same script to run on three machines, some of tables containing hundred
thousands of records. Below is a portion of his script. Is there a way to
improve his SQL command?
@Dumptables.sql
spool lata.csv
select * from lata;
spool off
spool subscriber.csv
select * from subscriber;
spool off
spool non_subscriber.csv
select * from non_subscriber;
spool off
spool numbering_plan.csv
select * from numbering_plan;
spool off;
spool service_area.csv
select * from service_area;
spool off
spool carrier.csv
select * from carrier;
spool off
spool escaped_number.csv
select * from escaped_number;
spool off
exit;
Regards,
David
-----Original Message-----
Sent: Sunday, March 02, 2003 8:09 PM
To: Multiple recipients of list ORACLE-L
David,
Have you checked the most obvious... The number of rows in the table?
Also, you say "three different Solaris8 machines"... How "different" are they? Are the disk subsystems the same on all three? How identical are their configurations? How similar are the init.ora files on all three machines (perhaps sort_area_size or something similar depending on the query to dump the table)? Unfortunately there's a lot of possibilities about what might cause the slow down.
The other suggestions of wait events and execution plans are valid ideas. Hopefully one of these will give a hint about where to look for the cause.
Regards,
Mark.
"Nguyen, David
M" To: Multiple recipients of list
ORACLE-L <ORACLE-L_at_fatcity.com>
<david.m.nguye cc:
n_at_xo.com> Subject: What to check?
Sent by:
root_at_fatcity.c
om
01/03/2003
08:09
Please respond
to ORACLE-L
Someone writes a SQL script to dump a table on three different database on three different Solaris8 machines, he complaines one of machines took 6 hours to dump a table while other two's only take one hour. He asks me to investigate why. I log into the machine in question to check I/O statistic, memory, CPU usage and found no problem. What else should I check here?
Regards,
David
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mark Richard INET: mrichard_at_transurban.com.au Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Nguyen, David M INET: david.m.nguyen_at_xo.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Mon Mar 03 2003 - 14:49:06 CST
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