| Event Id | 102 |
| Source | ESE |
| Description | process name (process id) instanceThe database engine started a new instance (number). |
| Event Information | Explanation : ESE event 102 is as follows: The database engine started a new instance (Instance #). ESE event 103 is as follows: The database engine stopped the instance (Instance #). ESE event 104 is as follows: The database engine stopped an instance (Instance #) with error (Error #). There is only one Jet database engine, ESE.dll, per server. However, there can be one instance of Jet running per storage group. Event 102 signifies that an instance of Jet has started and indicates which instance has started. Event 103 indicates which instance has stopped. These events can occur in the normal scheme of Exchange operations, or they may be associated with errors. Event 103 never has an error mentioned in the Description section of the event. Event 104 definitely indicates there is a problem and the named instance of Jet has stopped with a definite error associated with it, which is named in the Description section of Event 104. Event ID 103 has many potential causes - check events in the Application log before and after Event 103 to determine which errors are mentioned in the Description section of other events. Known causes for the database instance stopping with event 103 are as follows: Failing to apply an Exchange service pack for a reinstall or an Exchange-aware restore. Running out of disk space. Attempting to restore multiple storage groups simultaneously. Applying an Exchange service pack, which resulted in the databases becoming inconsistent. Event ID 104 has a definite set of potential causes. The most likely causes are indicated in the Description section of event 104: Error -1090 = 0xfffffbbe = JET_errInstanceUnavailable = This instance cannot be used because it encountered a fatal error. If ESE encounters this error, it will not be able to roll back any transactions and it will dismount the databases in the Storage Group for that instance of Jet. Error -1022 = 0xfff |
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