How to accept user inputs from sql script

Question

I want to create Tablespace useing sql script , but the location of the data file I need accept from user . (to get the location of the data file ) .
How can I accept user input from pl/sql .
Example :
  CREATE TABLESPACE  TSPACE_INDIA LOGGING
     DATAFILE 'H:\ORACLE_DATA\FRSDB\TSPACE_INDI_D1_01.dbf'
     SIZE 500M  AUTOEXTEND ON NEXT  1280K MAXSIZE UNLIMITED
     EXTENT MANAGEMENT LOCAL;here I need to accept location of the datafile from user ie : 'H:\ORACLE_DATA\FRSDB\TSPACE_INDI_D1_01.dbf'

Answer 1

Hi,
Whenenever you write dynamic SQL, put the SQL text into a variable. During development, display the variable instead of executing it. If it looks okay, then you can try executing it in addition to displaying it. When you're finished testing, then you can comment out or delete the display.
For example:
SET     SERVEROUTPUT     ON
DECLARE
    flocation     VARCHAR2 (300);
    sql_txt     VARCHAR2 (1000);
BEGIN
    SELECT  '&Enter_The_Path'
    INTO    flocation
    FROM    dual;
    sql_txt :=  'CREATE TABLESPACE SRC_TSPACE_INDIA LOGGING
     DATAFILE' || flocation || ' "\SRC_TSPACE_INDI_D1_01.dbf" ' || '
     SIZE 500M  AUTOEXTEND ON NEXT  1280K MAXSIZE UNLIMITED
     EXTENT MANAGEMENT LOCAL ';
    dbms_output.put_line (sql_txt || ' = sql_txt');
--  EXECUTE IMMEDIATE sql_txt;
END;
/When you run it, you'll see something like this:
Enter value for enter_the_path: c:\d\fubar
old   5:     SELECT  '&Enter_The_Path'
new   5:     SELECT  'c:\d\fubar'
CREATE TABLESPACE SRC_TSPACE_INDIA LOGGING
     DATAFILEc:\d\fubar
"\SRC_TSPACE_INDI_D1_01.dbf"
     SIZE 500M  AUTOEXTEND ON NEXT  1280K MAXSIZE
UNLIMITED
     EXTENT MANAGEMENT LOCAL  = sql_txt
PL/SQL procedure successfully completed.This makes it easy to see that you're missing a space after the keyword DATAFILE. There are other errrors, too. For example, the path name has to be inside the quotes with the file name, without a line-feed between them, and the quotes should be single-quotes, not double-quotes.
Is there some reason why you're using PL/SQL? In SQL, you can just say:
CREATE TABLESPACE SRC_TSPACE_INDIA LOGGING
DATAFILE  '&Enter_The_Path\SRC_TSPACE_INDI_D1_01.dbf'
SIZE 500M  AUTOEXTEND ON NEXT  1280K MAXSIZE UNLIMITED
EXTENT MANAGEMENT LOCAL;though I would use an ACCEPT command to given a better prompt.
Given that you want to use PL/SQL, you could assign the value above to sql_txt. If you need a separate PL/SQL variable for flocation, then you can assign it without using dual, for example:
DECLARE
    flocation     VARCHAR2 (300)     := '&Enter_The_Path';The dual table isn't needed very much in PL/SQL.
Edited by: Frank Kulash on Jan 10, 2013 6:56 AM