Does this query have effect on BAM/Prizm service?

Hi, Does Anyone help me on this problem?

I would like to query ‘nodemgr_element_performance’ periodically and export to another database for statistic and traffic analysis. But they found that Prizm collect only latest record. The previous values are archieved to somewhere. (We suspect /usr/local/Canopy/Prizm/modules/performance/data/*.rrd.) They would like to expand period that Prizm keep this performance information and access/read archieve files. Does this query have effect on BAM/Prizm service?

Anyone Pls do me a favor on this ? Thanks