How can I solve ORA-00911: invalid character error?

Question

I tried to execute an SQL INSERT with Toad for oracle:

INSERT INTO GRAT_ACTIVITY
   (UUID, IP_ADRESS, SEND_MAIL, DATE_         


        

Answer 1

If a special character other than $, _, and # is used in the name of a column or table, the name must be enclosed in double quotations. Link

Answer 2

Remove the semicolon (;), backtick (``) etc. from inside a query