Hello Hady,
have your database a problem?
Please look to transaction SM21, if you can find Information during your program progress.
Try a commit work and wait after your insert statement. Perhaps your database has a problem with locks (you see it in DB01).
Check your table in SE11, if your table has really the right keys. Go to the SE14 and drop the table and create the table. Then try your program again.
regards
Thomas