CREATE TABLE [新テーブル名] AS SELECT * FROM [旧テーブル名]
RENAME [旧テーブル名] TO [新テーブル名]
ALTER TABLE [テーブル名] ADD [列名] VARCHAR(10);
ALTER SYSTEM SET UTL_FILE_DIR='/u05/file_storage/recv_dir','/u05/file_storage/send_dir' SCOPE = SPFILE ;
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