IT Answers » Oracle 10g Database

Why do I not see Oracle database block gets and consistent gets

SAPORACLE — Wed, 13 Jul 2011 16:48:24 +0000

hi,

i have two test scenarios where i’m trying to understand to actual concept of db block gets and consistent gets.

SQL> set autotrace on

SQL>select * from scott.emp;

i get 14 rows then

Execution Plan ———————————————————-    0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=3 Card=14 Bytes=51           8)

   1    0   TABLE ACCESS (FULL) OF ‘EMP’ (TABLE) (Cost=3 Card=14 Bytes           =518)

Statistics ———————————————————-        1528 recursive calls           0 db block gets         289 consistent gets          44 physical reads           0 redo size        1585 bytes sent via SQL*Net to client         522 bytes received via SQL*Net from client           4 SQL*Net roundtrips to/from client          31 sorts (memory)           0 sorts (disk)          14 rows processed

on the above i do not see db block gets why?

when i run the same statement again this is what i get

Execution Plan ———————————————————-    0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=3 Card=14 Bytes=51           8)

   1    0   TABLE ACCESS (FULL) OF ‘EMP’ (TABLE) (Cost=3 Card=14 Bytes           =518)

Statistics ———————————————————-           0 recursive calls           0 db block gets          10 consistent gets           0 physical reads           0 redo size        1585 bytes sent via SQL*Net to client         522 bytes received via SQL*Net from client           4 SQL*Net roundtrips to/from client           0 sorts (memory)           0 sorts (disk)          14 rows processed no db lock gets again why?

basically i want to understand the difference between db block gets and consisten gets

also i run the same statement from different session and i get below result

Execution Plan ———————————————————-    0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=3 Card=14 Bytes=51           8)

   1    0   TABLE ACCESS (FULL) OF ‘EMP’ (TABLE) (Cost=3 Card=14 Bytes           =518)

Statistics ———————————————————-           0 recursive calls           0 db block gets           0 consistent gets           0 physical reads           0 redo size           0 bytes sent via SQL*Net to client           0 bytes received via SQL*Net from client           0 SQL*Net roundtrips to/from client           0 sorts (memory)           0 sorts (disk)          14 rows processed

here i do not see anything, why?

please help me understand the what’s happening here?

any help would be greatly appreciated

thanks in advance

Unable to establish connection to Oracle database 10g XE

Chandan651 — Sat, 11 Jun 2011 16:09:31 +0000

Hi All,

I have successfully Installed Oracle 10 g XE. When I Click ‘Go to Database Homepage’ to access the database the webpage shows an Error message “unable to establish a connection.”

What could be the possible reasons for this error?

and How can I fix it?

Appreciate your HELP !

Thanks in Advance,

Chandan

Oracle 10g to SQL Server 2008

Cholan — Tue, 19 Apr 2011 21:01:46 +0000

Our DB is Oracle 10g.
Our Clients Test DB is SQL Server.
Now sometimes, we do incremental loads, full loads or historic load.
The present system what we have is we send the insert statements and the DDL to them and they create and load. I did not write it.
It takes 40 hours.
Under 1 scheme we have 3 or 4 different client tables.
We need to load for client1 only client 1 tables, client2 client2 tables.
This is dependent upon the values in certain cols and it depends upon a join condition.
In Oracle SQL Loader you can do that kind of loading.
Is there a utility/tool that is available in SQL Server with which I can select only certain table rows by joining 3 tables and do a bulk load.
I need to transfer the PK and nothing else.
Data and PK.
Thanks

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Asdfzxcv — Tue, 22 Feb 2011 14:08:55 +0000

Hello

My oracle 10g express eddition is curroped in my system and i install new oracle 10g express edition then how to recover my old data from a folder oraclexe.Plz Hepl me i am in big poblem

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S19890820 — Thu, 13 Jan 2011 14:23:12 +0000

Hi.
I want to rename the database user(username)without deleting the user and again creating in ORACLE 10g database???

plz, help me

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Yomex — Thu, 06 Jan 2011 06:00:50 +0000

I have an oracle 10g database and would like to create a replica of it in oracle 9i. Could you please explaim if this is possible.

I’m sure there would be backward compatibility issues to contend with.

Regards,

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Henlock — Wed, 15 Dec 2010 10:36:48 +0000

how can i connnect my application server to oracle database 10g. the applciation server have a form that can be accessable through browser(client).pls tell be the configeration that i have to do.

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S19890820 — Tue, 23 Nov 2010 12:31:53 +0000

Rename username in oracle 10g database without droping it

Oracle 10g database creation errors in windows 7

Avioracle — Tue, 26 Oct 2010 07:12:06 +0000

hello friends this is avishek behera..

recently i installed oracle 10g database software only in windows 7.
after that i tried to create a database..
but i got an error like oermission denied..
i have installed in d drive which is not my system drive and also installed with administrator previlage “run as administrator”.

still i am unable to create database.
please suggest me what to do..
waiting for all ur valuable response..

thanx nd regards..
avishek

Windows go blank while running reports in 10g

Freestyler1098 — Fri, 24 Sep 2010 14:07:39 +0000

I have oracle 10g as the database and front-end. When I run my application in 2 different windows and run a report in one of the windows, the other goes blank until the report is finished running. Any ideas why? Appreciate your help.