exchange public folder database check dirty shutdown

Exchange public folder database check dirty shutdown .exe#
Exchange public folder database check dirty shutdown free#

The DB1 database shown in the diagram above requires transaction log E0000000003.log because the transactions contained within it were either partially committed to the. This will prevent the service from automatically restarting itself and attempting to mount the database while you inspect it. Before doing this, I recommend setting the Microsoft Exchange Information Store Service to “Disabled” (but not stopping it).

Exchange public folder database check dirty shutdown .exe#

Note: An easy way to get a database into Dirty Shutdown (for testing purposes, only do this in a lab) is to use Task Manager to kill the Store.exe (Exchange 2000-2010) or the .exe (Exchange 2013-2016) process. The diagram below displays a database in Dirty Shutdown, requiring log 3 (E0000000003.log) to mount. Whether a Dirty Shutdown happens and which transaction logs may be required to recover the database is dependent entirely upon which transactions were being processed at the time of the failure. However, if something happens to cause the database to terminate abruptly, it is probable to result in a Dirty Shutdown state. The diagram below demonstrates how the ESEUTIL utility validates that a database is in Clean Shutdown state. When this is allowed to happen, the database is said to be in “Clean Shutdown” and requires no transaction logs to mount because all transactions have already been replayed into the database.

When Exchange dismounts a database, the Information Store ensures that all transactions (dirty database pages) in cache are committed to the database (.edb) file. The diagram below provides a high-level flow chart for navigating common scenarios where a database will not mount.įirst, let’s define what happens in a Dirty Shutdown. But to be honest, a decade worth of experience is not required to troubleshoot a Dirty Shutdown event accurately, especially since the proper course of actions can easily fit into a decision tree. Over ten years of support, I have probably worked on well over a hundred Dirty Shutdown support cases. The words can still cause anxiety for Exchange Administrators who recall spending many hours while frantically attempting to get a database to mount and restore functionality. The words “Dirty Shutdown” are fairly self-explanatory a database is down and not in a healthy state. It is also common to see that an anti-virus product quarantines database files or logs, a step that might break the sequence of the log stream, making recovery from backup challenging, and possibly breaking DAG replication. Anti-virus is also a common reason why database files become corrupt as a result of multiple processes attempting to access the files simultaneously. It is common to discover that an anti-virus product either locks the database files or blocks necessary RPC communications. With anti-virus software, verify all exclusions have been properly configured. I recommend using event viewer to verify Active Directory communications as well as verifying there are no service dependencies not met (such as the Microsoft Exchange Active Directory Topology Service not being started). In situations where the Information Store service will not start, the most common issues involve communications between Exchange and Active Directory or some interaction involving a file used by Exchange and anti-virus software.

While database is in Clean Shutdown state, significant logical corruption exists causing the database to dismount when an attempt is made to read the data.

Exchange public folder database check dirty shutdown free#

Not enough free disk space on database or log file volume.The Microsoft Exchange Information Store Service is unable to start.The following issues can prevent an Exchange database from mounting: Many Exchange support problems involve corrupt databases which will not mount, and therefore prevent users from accessing their mailbox data.

A termination might be due to losing access to backend storage, file system corruption, or server-wide power loss. This article is an excerpt from the Exchange Server Troubleshooting Companion.ĭuring normal Exchange database operations, it’s certainly not unusual for a database process to terminate unexpectedly.