Sql loader script

Question

hi all i require a sql loader script
i have some files that i will have to load to oracle database 11g... i dont know the number of files that will fall on the directory daily
how do i do this. ?
my requirement is in_file parameter in the control file should be dynamically populated with the file names and all the files should be processed ... the structure and columns in all the files are same.
plz let me know if you have code for this.
regards
raj

Answer 1

Raj,
Here is you can use to generate sqlldr control and you can include this in simple sql script or call it from unix script or batch script. Run this sql from IDE or sqlplus and pass "table name " generate sqlldr control file
spool &table_name..ctl
SELECT      'LOAD DATA'
         || CHR (10)
         || 'INFILE '''
         || LOWER (table_name)
         || '.dat'''
         || CHR (10)
         || 'INTO TABLE '
         || table_name
         || CHR (10)
         || 'FIELDS TERMINATED BY '','''
         || CHR (10)
         || 'TRAILING NULLCOLS'
         || CHR (10)
         || '('
  FROM   user_tables
WHERE   table_name = UPPER ('&table_name');
  SELECT   DECODE (ROWNUM, 1, '   ', ' , ') || RPAD (column_name, 33, ' ')
           || DECODE (
                 data_type,
                 'VARCHAR2',
                 'CHAR NULLIF (' || column_name || '=BLANKS)',
                 'FLOAT',
                 'DECIMAL EXTERNAL NULLIF(' || column_name || '=BLANKS)',
                 'NUMBER',
                 DECODE (
                    data_precision,
                    0,
                    'INTEGER EXTERNAL NULLIF (' || column_name || '=BLANKS)',
                    DECODE (
                       data_scale,
                       0,
                       'INTEGER EXTERNAL NULLIF (' || column_name || '=BLANKS)',
                       'DECIMAL EXTERNAL NULLIF (' || column_name || '=BLANKS)'
                 'DATE',
                 'DATE "&dformat" NULLIF (' || column_name || '=BLANKS)',
                 NULL
    FROM   user_tab_columns
   WHERE   table_name = UPPER ('&table_name')
ORDER BY   column_id;
SELECT   ')' FROM DUAL;
spool offhttp://www.oracleutilities.com/OSUtil/sqlldr.html
Regards