Batch File Problem????????????

Question

Dear All,
I have created a batch file which will Export the Logical Oracle dump everyday of the week in their respective days folder eg. SUN, MON, TUE etc..... are the folders
Now i am planning to put something like after taking Wednesdays backup the Mondays backup shuld be deleted automatically. I am confused how to set the Day-2 parameter in my bacth file. Below is my Batch file any suggestions wuld be of great help
BATCH FILE:
REM ########### Printing Date and Time ###########
set backup_bin=C:\Schedules\Backup
cd %backup_bin%
echo "#######################################" >>%backup_bin%\backup.log
echo "Backup process started" >>%backup_bin%\backup.log
date /t >>%backup_bin%\backup.log
time /t >>%backup_bin%\backup.log
REM ########### set backup_folder variables ###########
for /f "Tokens=1-4 Delims=/ " %%i in ('date /t') do set backup_day=%%i
set backup_folder=D:\Oracle_DB_Tape_Backups\%backup_day%
echo "backup folder is %backup_folder%" >>%backup_bin%\backup.log
REM ########### Oracle Dump into D:\Oracle_DB_Tape_Backups\*** folders ###########
echo "Oracle Dump process started" >>%backup_bin%\backup.log
date /t >>%backup_bin%\backup.log
time /t >>%backup_bin%\backup.log
exp userid=apregs_admin/apregs_admin file='%backup_folder%\fulldump.DMP' log='%backup_folder%\log.log'
date /t >>%backup_bin%\backup.log
time /t >>%backup_bin%\backup.log
echo "Oracle Dump process completed" >>%backup_bin%\backup.log
REM ########### DELETE FROM PREV FOLDERS D:\Oracle_DB_Tape_Backups\*** folders ###########
Regards

Answer 1

If you want to handle this automatically, then you'll have to encode the weekday and perform arithmetics with the SET os command.
I suggest you to use, rather, an S.O.S. (Script generated Out of SQL) You can handle the difficulties of dates directly in a sql script, then this script would generate the batch script, you would only schedule your sql script and it could generate the required os script.