After some digging it appears that means the Store is corrupt. As an Exchange administrator, the following two symptoms indicate that Exchange should be looked at more closely as the possible cause of a -1018 error: After restoration of an online backup, Was the server restarted (event 6008 in the system log)? any idea? have a peek at this web-site
A logical error in the page integrity checksum mechanism would likely result in reports of massive and immediate corruption of the database, rather than in infrequent and seemingly random page errors. While it is true that the database is already damaged, it can be repaired with Eseutil, as long as the damage does not become too extensive. The expected page number was 307105 (0x0004afa1) and the actual page number was 307041 (0x0004afe1). Error 1019 is rare, and full discussion of analysis and troubleshooting this error is outside the scope of this paper.
Please contact your hardware vendor for further assistance diagnosing the problem. From the Support Center, you can also search the Microsoft Product Support Knowledge Base and contact Microsoft Product Support Services. Exchange Server TechCenterConnect to Exchange Server-related technical articles and other This paper describes Microsoft IT's experience and recommendations for dealing effectively with error -1018. Backup Retries and Transient -1018 Errors Not all -1018 errors are permanent.
Join the community of 500,000 technology professionals and ask your questions. The Description field of this event provides information that can be useful for advanced troubleshooting and analysis. Information on what it takes to support POP3 and IMAP4 clients in the field. https://www.petri.com/forums/forum/messaging-software/exchange-2000-2003/31473-ese-event-id-474 For example, suppose that you find during root cause analysis that you cannot copy large files to the affected disk without errors during the copy.
What is discovered about the root cause may influence the data recovery strategy. Microsoft IT chooses from several standard strategies to recover a database after a -1018 error occurs. In summary, error -1018 is scoped to report only two specific types of data corruption: A logical page number recorded on a page is nonzero and does not match the physical If you restore from an online backup and encounter a -1018 error during transaction log replay, the most likely reason is that corruption was introduced into the database by hardware instability
The Exchange transaction log file replay capability is another capability that allows Microsoft to effectively diagnose -1018 errors that may be the fault of Exchange. Microsoft .Net 3.5 is required. Event Id 474 Esent Thank you for searching on this message; your search helps us identify those areas for which we need to provide more information. Eseutil As a final note about server recovery, you should verify that the Exchange server and disk subsystem are running with the latest firmware and drivers recommended by the manufacturers.
It also covers the detection mechanisms that Exchange uses to discover and recover from damage to its database files. http://computerhelpdev.com/event-id/event-id-1121-exchange-2003.php Use backup software to restore your database from a backup. In prior versions of Exchange, transaction log file replay can be more than five times slower, with the average speed of replay tending to diminish as more logs are replayed. The event that caused the -1018 error must have occurred between these two points in time.
This means that Exchange Server 2003 SP1 databases are not backward compatible, even with the Exchange Server 2003 original release. A -1018 error may be reported because of a failure in memory or in a subsystem other than the disk. Introduction No computer data storage mechanism is perfect. http://computerhelpdev.com/event-id/event-id-348-exchange-2003.php The expected checksum was 8317317911392405552 (0x736d0c92c889c830) and the actual checksum was 8317317911392405568 (0x736d0c92c889c840).
It is important that backups are good for all databases, and not just the database affected by the -1018, because the error indicates that the entire server is at risk. Complexity can be in the type of access (the I/O size combined with direction), as well as in the actual data content patterns. The other bookend is the time at which the -1018 error was actually reported in the application log.
During backup, Exchange will retry a page read 16 times, waiting a second or two between each attempt. Resources Join | Advertise Copyright © 1998-2017 ENGINEERING.com, Inc. Covered by US Patent. In Exchange Server 2003 SP1, the typical performance of log file replay is better than 1,000 log files per hour with that performance remaining consistent, regardless of the number of log
Each of these tools, used in a stress test configuration, makes the server unusable for other purposes while the tests are running. x 34 Private comment: Subscribers only. Deployment guidelines for Outlook Web Access. have a peek here This error will occur if a page in the database is expected to be in use, but the page number is zero.
There are a few possibilities associated with this error: 1. For more information, click http://www.microsoft.com/contentredirect.asp. Standard diagnostic test runs are seldom successful in diagnosing these problems. (If the standard diagnostic run could catch this particular problem, would it not already have been caught?) Understanding these issues In addition, after restoration of a backup, transaction log replay re-creates every change that happened subsequent to the backup.
In any case, the two formulas allow you to translate back and forth between logical pages and byte offsets as needed.