Make Global Temporary Tables DDL errors more specific

12.2.0-opt>CREATE GLOBAL TEMPORARY TABLE t (c INT) ON COMMIT PRESERVE ROWS;

Query OK, 0 rows affected (0.009 sec)

12.2.0-opt>INSERT t VALUES (1);

Query OK, 1 row affected (0.000 sec)

12.2.0-opt>DROP TABLE t;

ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction

SQL> DROP TABLE t;

DROP TABLE t

           *

ERROR at line 1:

ORA-14452: attempt to create, alter or drop an index on temporary table already in use

Help: https://docs.oracle.com/error-help/db/ora-14452/

CREATE GLOBAL TEMPORARY TABLE t (c INT) ON COMMIT PRESERVE ROWS;

INSERT t VALUES (1);

DROP TABLE t;