I find the error message when I use the INFO command on a table that doesn't exist less then helpful, the good old describe is much better about what is going on:
SQL> version
Oracle SQLDeveloper Command-Line (SQLcl) version: 4.2.0.16.355.0402
SQL>
SQL>
SQL> infor vehicles_temp2
ORA-20005: ORU-10034: context argument must be integral, 0 to 9
ORA-06512: at "SYS.DBMS_UTILITY", line 153
ORA-06512: at line 1
SQL> desc vehicles_temp2
ERROR:
ORA-04043: object vehicles_temp2 does not exist
SQL>