Oracle-L: RE: Count(*) last 30 seconds

From: Ramon E. Estevez <com.banilejas_at_codetel.net.do>
Date: Tue, 11 Feb 2003 12:24:39 -0800
Message-ID: <F001.00549F71.20030211122439@fatcity.com>

Tks to all of you for your help.

The table has a PK that is formed by 11 fields of 13 that the table has. This table is for a DW system.

This the only one in the table.

I analyze the table again, had done it before using dbms_stats.gather_schema_stats, and the time went down to 7 seconds.

And there is no difference between count(*) and count(1), the same results with both of them.

tks to all

-----Original Message-----
Lisa
Sent: Tuesday, February 11, 2003 11:40 AM To: Multiple recipients of list ORACLE-L

well, have you traced the statement yet? That's where to start, with autotrace.

My count(*) which executes a FTS (in a load to mitigate any ORA-1555 error) takes 15 minutes to count 50 million rows.

Lisa Koivu
Tired, Tired, Tired.
Fairfield Resorts, Inc.
5259 Coconut Creek Parkway
Ft. Lauderdale, FL, USA 33063
Office: 954-935-4117
Fax: 954-935-3639
Cell: 954-683-4459

-----Original Message-----
Sent: Tuesday, February 11, 2003 11:19 AM To: Multiple recipients of list ORACLE-L

Hi list,

I issue a select count(*) from mytable and last 30 seconds.

The table has 1,466,196 records and were loaded with a batch process, so they are in a countinous space.

I consider that time exagerated.

The TBS is LMT with a Uniform size of 128 MB.

The block size is 8MB, version 9.2.0.1.0 in Windows 2000.

Where should I start looking ???

TIA Ramon E. Estevez
com.banilejas_at_codetel.net.do
809-565-3121

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Author: Ramon E. Estevez
INET: com.banilejas_at_codetel.net.do

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