Identify two situations in which the alert log file is updated.（）

• A、Running a query on a table returns ORA-600: Internal Error.
• B、Inserting a value into a table returns ORA-01722: invalid number.
• C、Creating a table returns ORA-00955: name us already in used by an existing objects.
• D、Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.
• E、Rebuilding an index using ALTER INDEX . . . REBUILD fails with an ORA-01578: ORACLE data block corrupted (file # 14, block # 50) error.