http://asktom.oracle.com These are the most recently asked questions on Ask Tom 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:1619550482617 <code>Hi Tom, I am encountering a situation related to data loading and excessive archive log generation. I am using Oracle 8.1.6 under Solaris 7. I insert twice a week about 1 million rows in to a table whose columns are of number datatype. T... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:7682748147019 <code>I have a need to know if a file which is defined in the database as a varchar2, i.e. imagefile varchar2(255), actually exists on the server or not. I read the answer where it was suggested to use the dbms_lob.fileexists function, however af... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1271525663997 <code>Tom I have observed that in a few queries of mine, I am retrieving columns which are part of the composite primary key, or the whole primary key. then explain shows that this is doing a index scan and a table scan by rowid. Now if I fo... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:978801679202 <code></code> http://asktom.oracle.com/pls/ask/f?p=4950:9:::NO::F4950_P9_ORIG,F4950_P9_DISPLAYID:Y,963478374614 <code> Finally Tom, I understood what you were saying.. I did the following create table emppart ( EMPNO ... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:2047869500346039771 Respected Sir, First of all thanks for all your help to oracle community In non-unique index, rows in leaf block are sorted on <key1,key2...Keyn,row-id> Since data is sorted first on key1 then on key2 so on.. and finally on rowid My ques... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:227413938857 <code>Tom, sorry about that I figured it out finally. Thanks. -quinn I am somewhat familiar with dynamic sql and can substitute values in the sql e.g. st := 'select acno from prod.acc where acp = ''PI'' and acno = :1'; execute immedia... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:18157580862005 <code>Hi, I have problem with query, I always get error message " ORA - 01652 unable to extend temp segment..". (I cannot use ALTER TABLESPACE ADD DATAFILE statement to add one or more files to the tablespace indicated.) I need get this result, bu... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::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::::P11_QUESTION_ID:529123700346381713 Hi Tom, we are planning to create our development database tier as 3-Node Oracle RAC cluster with 4 databases like Four databases -------------- - DB1 - DB2 - DB3 - DB4 <b>Node1</b>: (DB1 with instance DB11)+(DB2 with instance DB21)... http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1615330671789 <code>"In 9i, with the addition of external tables ( the ability to query a FLAT FILE with SQL) -- SQLLDR might be "moot". Using the external table and the insert /*+ append */ I can basically do a direct path load from file to database without ...