The AI file header block contains information that helps you select the correct AI file to restore during disaster recovery.

To display the after-image file summary, use the RFUTIL - C AIMAGE SUMMARY utility. For syntax, see RFUTIL AIMAGE SUMMARY qualifier.

The following table compares the AIMAGE SUMMARY utility to the AIMAGE SCAN utility.
Utility Function Purpose
RFUTIL AIMAGE SCAN Reads every block in the master block and the AI file.

Gives statistical information, for example, how many notes and transactions were involved. Used for detailed analysis of a recovery situation to tell what particular point in time to roll forward to.

RFUTIL AIMAGE SUMMARY Reads only the AI Header block of the AI file and returns summary of AI header from the first and last block of the AI file.

Lets you identify which files go with your database if you have thousands of AI files spread across remote locations. Identifies the sequence number of the file. You can quickly run the utility on a single file or a list of all the files contained in a file to identify the next sequence number you need.

The AI summary command does not require the database supplied to belong to the AI files or even have the same AI block size as the AI files. The command will determine the AI block size from the AI files, and print it out as part of the output.

The AIMAGE SUMMARY utility displays content to standard output and the database log (.lg) file.