3265 Transaction has been Aborted by Administrator or Operations Staff.
Someone with the proper Access Right has completed executing an ABORT SESSION command from a Host, OR, someone has completed executing an ABORT SESSION command from the DBC Console -DBW (which requires no Access Right).
PFMUsTsk or PFMCoTsk.
This message is informational. The ABORT SESSION rolled back work in progress for the affected sessions and may optionally have logged those sessions off the Teradata DBS.