http://asktom.oracle.com These are the questions on Ask Tom that have the most "hits" 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::NO::P11_QUESTION_ID:2290062993260 <code>Hi, How to determine if an index needs to be rebuilt if the optimizer mode is RULE? Thanx. </code> http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:8764517459743 <code>I am new in tuning sql statements. Can u give a methodology of tuning the sql statements. </code> http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:45033135081903 <code>Hi I am trying to use SQLPlus to connect to database directly using just the connect string (ie without referencing to tnsnames.ora) I have this in my tnsnames.ora POD = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = ... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:367980988799 <code>Can you give me a solution for converting CLOBS datatype to VARCHAR datatypes, all the documents I refer to talk about converting BLOBS to VARCHAR and when I try and apply the examples to CLOBS, get errors </code> http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:3083286970877 <code>Tom: I have a table that initially stores information about items in a warehouse stored in different bins. Table look like this where manual inventories are done every 3 months. Effective date is the sysdate when record is inserted. Inv... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:2196162600402 <code>Hi Tom, Is there anyway that I can just use SQL to do string concatenation on a VARCHAR2 field much the same way that a SUM() function is used on a NUMBER field. For example, SELECT SUM(revenue), department FROM sales_table ... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:766825833740 <code>Please state an example of pivot query. I know that in cardinality I've 2 columns, so how can I show them in columnar form and I know the cardinality is 4. Please also illustrate method of Varray and Nested Tables. Regards Puneet </code... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:255615160805 <code>How to send personalized email to clients registered in my portal www.intrainternet.com using the information stored in our Database Oracle 8i automatically? </code> http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:839298816582 <code>Hi, Thanks for your earlier responses.... See, i have one more problem, like i want to retrive the first 4000 characters of the long datatype, with out using the pl sql code. i just wrote a function like // create or replace func... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:3027089372477 <code>Hi Tom, Luckily I'm in the position to ask a question right now ... I've been searching the archives, but didn't find a solution ... My problem is the following: I've a query like ... SELECT U.UserId, U.LoginName, U.PassWord, U.For...