http://asktom.oracle.com These are the questions on Ask Tom that have the most comments en-us Copyright 1999-2006, Oracle Corporation http://asktom.oracle.com/i/asktom2.gif http://asktom.oracle.com 50 50 Ask Tom is a forum where Tom Kyte, Oracle's Database Guru, answers questions regarding Oracle technology, specifically the database. http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1769187400346969442 Hi Tim, Thanx for all your help to the Oracle Community. Is it possible to have a DB user identified externally and also have a DB password so he/she can log both ways Authenticated from os as well as using account name and password FOR... 2009-06-08 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1769392200346820632 Hi Tom, In my latest project I have come across the following data model. All the application tables are modelled on similar lines. Eg, if we have a customer table with the following information Column Data_type ---------------... 2009-06-08 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1769669400346272947 Hi Tom Greeting, I have a table item_analysis as below. item_id frequency 1 3 2 19 3 6 4 8 5 1 ..... I would like to get a result set which would group item_id into two groups so that th... 2009-06-08 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1794145000346577404 Hi, I have a requirement to select only those fields which have numeric value and do not contain any characters SQL> desc priti Name Null? Type ----------------------------------------- -------- -----... 2009-06-26 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1769805100346245044 This type of question comes up quite often in oracle forum. Below is the test script <code>create table test(col_1 number, col_2 number,col_3 number); insert into test values (1,1,4); insert into test values (1,2,null); insert into test... 2009-06-09 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1709080600346973208 This is not a specific test-case question... but really more of a general database architecture question. I'm trying to get a handle on what kinds of operations the database does in TEMP space versus what is does in the PGA memory. A consistent adjec... 2009-05-11 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1715881300346604706 Hi Tom, I have 5 databases running on HPUX box having 16GB Ram How to find the total memory consumed by each of these Databases From the 1) OS ( may be some ps -ef dont know ) 2) Database ( I did show sga n... 2009-05-13 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1794096300346327738 Hi Tom, I need to write code to retrieve the DDL of our Production database. (Don't yell at me, I didn't design this application, I inherited it :-) I need to implement a version control mechanism now, and I need the DDL to create a baseline (v... 2009-06-26 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1769030600346312684 Hello Sir Thanks for this useful site, I learned lots of think. While reading Joanathan Lewis book "Pratical oracle 8i" he mentioned about "resuing the tablespace name, since pmon wake up and scan the tablespace for reclaiming the space" cou... 2009-06-08 http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1709148800346124469 Hello, I have a table that has multiple tablespaces. Some of these tablespaces are READ ONLY. How do I determine if a record from the table belongs to a READ ONLY tablespace? Thanks. It is a partitioned table and each partition in the table has... 2009-05-11