tailieunhanh - Oracle® Database High Availability Best Practices

In ARCHIVELOG mode, the database can be completely recovered from both instance and disk failure. The database can also be backed up while it is open and available for use. However, additional administrative operations are required to maintain the archived redo log. If the database redo log operates in NOARCHIVELOG mode, then the database can be completely recovered from instance failure, but not from disk failure. Also, the database can be backed up only while it is completely closed. Because no archived redo log is created, no extra work is required by the database administrator. . | ORACLE Oracle Database High Availability Best Practices 10g Release 2 B25159-01 July 2006 Oracle Database High Availability Best Practices 10g Release 2 B25159-01 Copyright 2006 Oracle. All rights reserved. Contributing Authors Andrew Babb Tammy Bednar Immanuel Chan Timothy Chien Craig B. Foch Michael Nowak Viv Schupmann Michael Todd Smith Vinay Srihari Lawrence To Randy Urbano Douglas Utzig James Viscusi Contributors Larry Carpenter Joseph Meeks Ashish Ray coauthors of MAA white papers Contributor Valarie Moore graphic artist The Programs which include both the software and documentation contain proprietary information they are provided under a license agreement containing restrictions on use and disclosure and are also protected by copyright patent and other intellectual and industrial property laws. Reverse engineering disassembly or decompilation of the Programs except to the extent required to obtain interoperability with other independently created software or as specified by law is prohibited. The information contained in this document is subject to change without notice. If you find any problems in the documentation please report them to us in writing. This document is not warranted to be error-free. Except as may be expressly permitted in your license agreement for these Programs no part of these Programs may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose. If the Programs are delivered to the United States Government or anyone licensing or using the Programs on behalf of the United States Government the following notice is applicable . GOVERNMENT RIGHTS Programs software databases and related documentation and technical data delivered to . Government customers are commercial computer software or commercial technical data pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such use duplication disclosure modification and adaptation of .