ORA-00903
invalid table name
Cause
A table or cluster name was invalid or does not exist. This message was also issued if an invalid cluster name or no cluster name was specified in an ALTER CLUSTER or DROP CLUSTER statement.
Action
Check spelling. A valid table name or cluster name must begin with a letter and may contain only alphanumeric characters and the special characters $, _, and #. The name must be less than or equal to 30 characters and cannot be a reserved word.