begin execute immediate 'whatever_text_string_you_want'; end;
or
declare
v_variable_tx VARCHAR2(32000);
begin
v_variable_tx:='whatever_you_want';
execute immediate v_variable_tx;
end;
The code to be executed can be passed as a variable or directly as a string in the command.
The string cannot exceed 32K.
The code can be a single SQL command or a large block of PL/SQL.
All PL/SQL blocks passed as a string should have a semicolon at the end:
execute immediate 'begin p_test; end;';
All SQL statements passed as a string should not have a semicolon at the end:
execute immediate 'select 1 from dual' into a;