The DBCC LOG command is used in SQL Server environments to analyze the transaction log files of a database. It provides insights into the transactions that have occurred, which is crucial for forensic analysis in the event of an incident. The syntaxDBCC LOG(<database_name>, <output_level>)allows an incident handler to specify the level of detail they wish to retrieve from the log files. When an incident handler like Adam requires the full information on each operation along with the hex dump of the current transaction row, the output parameter should be set to 4. This level of output is the most verbose, providing comprehensive details about each transaction, including a hex dump which is essential for a deep forensic analysis. It helps in understanding the exact changes made by transactions, which can be pivotal in investigating incidents involving data manipulation or other unauthorized database activities.
References:EC-Council's Certified Incident Handler (ECIH v3) program emphasizes the importance of understanding and utilizing various tools and commands for forensic analysis, including how to use the DBCC LOG command for transaction log analysis in SQL Server environments.