TAILIEUCHUNG - OCA /OCP Oracle Database 11g A ll-in-One Exam Guide- P67

OCA /OCP Oracle Database 11g A ll-in-One Exam Guide- P67:There is an ever increasing demand for staff with IT industry certification. The benefits to employers are significant—they can be certain that staff have a certain level of competence—and the benefits to the individuals, in terms of demand for their services, are equally great. Many employers are now requiring technical staff to have certifications, and many IT purchasers will not buy from firms that do not have certified staff. | OCA OCP Oracle Database 11g All-in-One Exam Guide 616 This command will locate all cumulative and differential incremental level 1 backups and apply them. The NOREDO qualifier is needed to instruct RMAN not to attempt to apply any redo data because in noarchivelog mode there is none to apply. Recovery of a Noncritical File in Archivelog Mode In an Oracle database the datafiles that make up the SYSTEM tablespace and the currently active undo tablespace as specified by the UNDO_TABLESPACE parameter are considered to be critical. Damage to any of these will result in the instance terminating immediately. Furthermore the database cannot be opened again until the damage has been repaired by a restore and recover exercise. Damage to the other datafiles which make up tablespaces for user data will not as a rule result in the instance crashing. Oracle will take the damaged files offline making their contents inaccessible but the rest of the database should remain open. How your application software will react to this will depend on how it is structured and written. TIP Is it safe to run your application with part of the database unavailable This is a matter for discussion with your developers and business analysts and an important point to consider when deciding on how to spread your segments across tablespaces. If your backups were done with RMAN the restore and recovery operation of a damaged datafile will be completely automatic. RMAN will carry out the restore in the most efficient manner possible making intelligent use of full and incremental backups and then applying the necessary archive logs. If RMAN is linked to a tape library through SBT channels it will load the tapes automatically to extract the files it needs. The restore and complete recovery of a datafile can succeed only if all the archive log files generated since the last backup of the datafile are available. Either they must still be on disk in the archive log destination directories or if they have been

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.