文档解释
ORA-01258: unable to delete temporary file string
Cause: A DROP TABLESPACE INCLUDING CONTENTS AND DATAFILES or ALTER DATABASE TEMPFILE DROP INCLUDING DATAFILES operation was not able to delete a temporary file in the database.
Action: Subsequent errors describe the operating system error that prevented the file deletion. Fix the problem, if possible, and manually purge the file.
ORA-01258是一个数据库内部错误，它表示Oracle无法删除指定的临时文件。
官方解释
常见原因：通常发生此错误的原因是指定的文件正被其他应用程序占用，导致Oracle无法删除它，也可能是应用程序发生错误，导致ORACLE无法删除指定的文件。
