Siehe die Kommentare:
CLEAR SCREEN
SET VERIFY OFF
ACCEPT val CHAR PROMPT 'What value do you want to search for: '
CLEAR SCREEN;
DECLARE
match_count INTEGER;
v_search_string VARCHAR2(4000) := '&val'; /* this was <<val>> */
BEGIN
FOR t IN (SELECT owner,
table_name,
column_name
FROM all_tab_columns
WHERE data_type IN ('CHAR',
'VARCHAR2',
'NCHAR',
'NVARCHAR2',
'CLOB',
'NCLOB'))
LOOP
BEGIN
EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM ' || t.owner || '.' || t.table_name || ' WHERE ' || t.column_name || ' = :1' INTO match_count USING v_search_string;
IF match_count > 0
THEN
DBMS_OUTPUT.put_line(t.owner || '.' || t.table_name || ' ' || t.column_name || ' ' || match_count);
END IF;
EXCEPTION
WHEN OTHERS
THEN
DBMS_OUTPUT.put_line('Error encountered trying to read ' || t.column_name || ' from ' || t.owner || '.' || t.table_name);
END;
END LOOP;
END;
/
