ATM Transaction Anayzer User and Installation Guide

HP NonStop ATM Transaction Analyzer: Overview 13
1-4-1 ATM/TA Backend Components
The ATM/TA installation on the HP NonStop Server installs the following components on the backend.
• $ATAnn
$ATAnn is the ATM/TA Record collector component installed on the HP NonStop Server. It collects and
transfers data from the ATM transaction log file (TLF) to a temporary database called TLFDB. A single
NonStop backend might have multiple $ATAnn processes, one for each LNET configured within the
environment. Each process can be started in the desired CPU to balance the load.
• TLFDB
TLFDB is a temporary database, which acts as a Store-and-Forward (SAF) file to deal with network outage
problems. The data in TLFDB is written by $ATAnn. Multiple $ATAnn processes use file-locking facility to
synchronize data writing to this SAF database. The database size can be configured as per customer
requirement. A size of 350 MB is good enough to hold a million transactions in the SAF database.
• MAST-DB
MAST-DB is an enscribe database file, which stores the offset of the last record in the TLFDB file so that
collector can write the next records from this offset in temporary database TLFDB.
• $ATARD
$ATARD is the ATM/TA Feeder component, which feeds the collected data from the temporary database to
the Elink on the HP NonStop Server.
• $ATALK
$ATALK is the communication middle-ware, acting as a gateway between the HP NonStop system and the
front-end. This acts as a transport layer to send/receive database application with data.
• $ATMAN
This is the main ATM/TA process, running as a process pair to make the solution fault-tolerant. This process
monitors all the backend components and restarts them in case of failures.
• BESTATUS
BESTATUS is a diagnostic utility to display the overall HP NonStop status.
• $ATALG
$ATALG is the ATM/TA logger component responsible for logging information to the TLFLOG file and EMS
events to the desired collector.
• TLFCONF
TLFCONF is the configuration file for ATM/TA.
• ELKCONF
ELKCONF is the configuration file for the backend Elink component.
• Collector
Collectors are the event collectors at the backend. $0 is the default collector, but user can change the
collector for event messages by changing the collector parameter in the TLFCONF file.
NOTE: All the ATM/TA HP NonStop components have the “AT” prefix by default. You can change the
process prefix during installation.
HP NonStop ATM Transaction Analyzer: Overview