Depending on the type of information requested, IXCQUERY might reference the CFRM active policy. Multiple IXCQUERY requests could result in a large amount of I/O to the CFRM couple data set, which in turn, could generate a noticeable loss of system performance. When designing an application such as a sysplex monitoring tool that uses the IXCQUERY macro, be aware of the performance effect of multiple macro invocations.