Update frequency of CurrentSpool in dbc.DiskSpace - response (6) by shail

Hi Dieter/TD Experts
Could you please help me to understand TPT FAST EXP utility functionality. We got into PROD issue when DB performance was severly impacted and it was very slow in response. We are using TPT Fast Exp to read data. We have used given SQL
SELECT TY_ID,FR_ID, Min(EFECT_STRT_DT), SRC_SYS_ST_FR_POOL_ID, MIN(REC_LD_TS) FROM TY_FR_DTL   WHERE  EFECT_END_DT = '9999-12-31'   GROUP BY TY_ID,FR_ID, SRC_SYS_ST_FR_POOL_ID HAVING COUNT (*) > 1
In Logs DBA observed that they got multiple entries of this query, They say it was runnin in Loop. I am very new to TPT usage and we are using it through informatica. In Informatica logs it just show following error message for every row
Message
: [ERROR] Plug-in failed to fetch data on row [1] with status [2646].
Message Code
: TPTRD_21215
Message
: [ERROR] Plug-in failed to fetch data on row [2] with status [2646].
 
Could you please help me to understand why TPT Fast Exp will run query in loop. I have doubt on DBA statment that it is running in loop but they are seeing multiple enteries of same query in logs.
Is this TPT functionality that it will fire select query for every record?
is there an possibility that DB was already slow and because select query couldn't fetch record it was issuing multiple times.
Please share your valuable comments that can help me to start Right Debugging.
Regards
Shail