Mega Code Archive
Bind variables can be declared in your SQLPlus script,Preface a bind variable with a colon to reference it in a PLSQL block
SQL>
SQL> SET ECHO ON
SQL>
SQL> VARIABLE s_table_name varchar2(30)
SQL>
SQL>
SQL> BEGIN
2 :s_table_name := 'emp';
3 END;
4 /
PL/SQL procedure successfully completed.
SQL>