Set command

Sets an escape character so special characters can be escaped from processing. By default escape is off; no escape character is defined. When you switch escape on the default character is \.

Values:
SET escape ON;     Note: the standard escape character is \
SET escape OFF;   
SET escape '~';      Note: the escape character is ~

Example:
SET escape '\';
select 'a\&b' from dual;    --Displays a&b. &b is not processed as a bind variable.

Values:
SET feedback ON;
SET feedback OFF;

Values:
SET timing ON;
SET timing OFF;