The Microsoft Exchange Information Store service randomly stops responding on a computer that is running Microsoft Exchange Server 2007. Additionally, the following event is logged in the event log:
Event Type: Error Event Source: MSExchangeIS Event Category: General Event ID: 1160 Date: <date> Time: <time> User: N/A Computer: <computer name> Description: Database resource failure error 0xfffffc0b occurred in function JTAB_BASE::EcDelete while accessing the database "<storage group\mailbox storage>".
This issue occurs because the table cursor leaks when a transaction is rolled back on to the server. When a table has to be closed, the table may be postponed to be closed in order to reuse the table later. However, when this table is postponed to be closed and a transaction is rolled back afterward, the table cursor is leaked.
To resolve this issue, install the following update rollup:
2530488 Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.