SQL> create table  lqs_cold_recovery (col number);

Table created.

SQL> lock table lqs_cold_recovery in exclusive mode;

Table(s) Locked.

SQL> LOCK TABLE lqs_cold_recovery IN EXCLUSIVE MODE;

Table(s) Locked.

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production

SQL>

SQL> create table  lqs_cold_recovery (col number);

Table created.

SQL> lock table lqs_cold_recovery in exclusive mode;

Table(s) Locked.

SQL> LOCK TABLE lqs_cold_recovery IN EXCLUSIVE MODE;

Table(s) Locked.

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production

SQL>

SQL> lock table does_not_exist in exclusive mode;
lock table does_not_exist in exclusive mode
           *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL>