Microsoft Exchange Server facilitates its core services through the Extensible Storage Engine or ESE storage technology which is also called as JET Blue. It is widely referred as the core of Exchange Server, Windows Search and Active Directory.
One of the primary and crucial task of ESE is to let applications store and fetch data using sequential or indexed approach. It should be noted that the JET Blue technology is pre-configured with provisions to recover the crashed Exchange database and also serves as a major booster for Exchange Server performance. It has highly concurrent transactions which is best for the server applications.
Microsoft Exchange Jet engine errors are majorly encountered when any damage in Exchange Server at file, database, or application level happens. There are serious levels of repercussions after the Exchange Server is hit by the jet engine errors. One may encounter with the following errors when any region of Exchange Server is corrupted by unexpected hardware or software crashes.
- 1022 JET_err DiskIO – It occurs when the disk Input/output process restricts Exchange Server to access the targeted page in the Exchange database. More specifically, the 1022 error can be the cause of truncated or damaged file when Exchange Server access page number that exceeds the total number of pages. In the end, the Exchange information store gets corrupted because of inefficient transaction log replay activities.
- 1019 JET_err Page NotInitialized – Such an error occurs when the requested page is either empty or uninitialized in the Exchange database. The root cause for the page unavailability might be the corruption in the file system which subsequently damages the Exchange Server database.
-1018 JET_err Read VerifyFailure – It occurs when incorrect checksum or incorrect page number is encountered during the read page process. Exchange Server finds the checksum value of stored page as different with the final recalculated checksum value at the page read process. In addition, the discrepancies in the physical location of a page leads to mismatch in the page number which ultimately corrupts the Exchange file system.
One can't restrict themselves in acknowledging the preceding mentioned jet engine errors as there goes a long list of jet engine errors which consists of the following:
In the preceding topics, we have seen the plethora of Exchange Jet engine errors and its minute implications damaging the Exchange at file, database, and information store levels. However, while summing up the entire Exchange Jet engine errors reasons, one may look out for the following most probable reasons behind the corruption.
We have seen the nature and impact of Exchange jet engine errors. However, one must plan out the concrete strategies to discard these errors, thereby restoring the Exchange EDB mailboxes and database.
First one should be checking whether the current Exchange Server installation is up to date or not. If not, then it is recommended to install the latest service pack for the Exchange Server version.
Getting the damaged or corrupted Exchange Server database on the right track requires an expert troubleshooting treatments, which includes the following:
Facilitating the backup mechanism from the Exchange Server can be helpful to save your crucial EDB mailboxes. Use the Windows Server backup or NTBackup technology to safeguard the Exchange files from infected database. The following steps will demonstrate you to take Exchange backup using Windows Server backup.
MS Exchange Server has intrinsic command line mechanism to analyze and restore several types of errors and corruptions. All you need to do is just launch the command prompt and specify desired ESEUTIL command according to the requirements. Check out the following commands and its applications.
It is not always possible to successfully fix all the corrupted EDB mailboxes after fielding all tips and tracks. The Exchange Admins are always in doubt to claim all database files after encountering with the Exchange jet engine errors. In such scenarios, one must find a trustworthy and proactive third-party Exchange Server Recovery software that can easily resurrect entire Exchange database without losing any single property.
Kernel for Exchange Server is the cutting-edge technology developed to restrain major Exchange Server corruptions including jet engine errors and dirty shutdown states. EDB to PST converter software is incorporated with extraordinary migration alternatives that eases the restoration of Exchange database items.
Perfect solution for Exchange recovery and migration.