在Oracle中創建和使用CLOB字段可以通過以下步驟實現：
CREATE TABLE my_table (
id NUMBER,
clob_column CLOB
);
INSERT INTO my_table (id, clob_column) VALUES (1, TO_CLOB('This is a CLOB value'));
UPDATE my_table SET clob_column = TO_CLOB('Updated CLOB value') WHERE id = 1;
SELECT clob_column FROM my_table WHERE id = 1;
DECLARE
clob_data CLOB;
BEGIN
SELECT clob_column INTO clob_data FROM my_table WHERE id = 1;
DBMS_OUTPUT.PUT_LINE(clob_data);
END;
通過以上步驟，您可以在Oracle中成功創建和使用CLOB字段。
