ORA-31631: privileges are required
Cause: The necessary privileges are not available for operations such as: restarting a job on behalf of another owner, using a device as a member of the dump file set, or ommiting a directory object associated with any of the various output files. Refer to any following error messages for additional information.
Action: Select a different job to restart, try a different operation, or contact a database administrator to acquire the needed privileges.
ORA-31631错误表明必须要求特定的权限才能完成特定的操作。
ORA-31631是Oracle中的一个错误，它意味着操作无效，因为您没有执行该操作所需的权限。
该错误通常发生在尝试在数据库中执行具有敏感权限要求的操作（例如备份数据库）时，用户没有这些权限。
1.检查 Oracle 的错误代码文档，以确定到底您需要什么特定的权限才能完成特定操作。
2.检查执行操作的帐户是否具有实际权限。
3.适当地分配这些权限给执行操作的帐户，然后再次尝试。