Caution: The database engine cannot guarantee transaction atomicity, transaction durability, or archival log safety for any client during use of Accelerated mode by any client. The reason for this restriction is that in the event a restore from log is needed, the log may not contain adequate information to complete the restore, because it is only a partial record of operations on a data file.

For example, if a system failure occurs while the same file is being accessed by a client performing inserts using Accelerated mode and a client performing updates using Normal mode, it is possible for the transaction log to contain updates to records that do not yet exist in the data files, because the Accelerated insert operation in memory was never flushed to disk, while the transactional update operation was written to the transaction log.

An attempt to roll forward an archival log containing this combination of operations will fail.