2. Understanding Ingres Components : Logging and Locking Systems : Archiver Process : Data Manipulation Facility Archiver Process (dmfacp)
 
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Data Manipulation Facility Archiver Process (dmfacp)
Each installation has a single archiver process called the dmfacp (data manipulation facility archiver process). The archiver process is responsible for copying the history of operations performed on journaled databases from the transaction log file to the journal files. Journal files contain the subset of transaction log file information associated with a specific database.
The name of the DMFACP process depends on the installation code. For Ingres installations with the default installation code, the process name is DMFACP. For non-default installation codes, the DMFACP process name is DMFACPxx where xx is the installation code.