Locks in NRIV Table

Hi ALL

I am new to production support while monitoring the data loads BASIS find the locks in BW system.

We got more alerts for Row lock contention IN BW production .Kindly help me understanding and resolving the issue.

SQL:

SELECT /*+ FIRST_ROWS (1) */ "FROMNUMBER", "TONUMBER", "NRLEVEL" FROM "NRIV" WHERE "CLIENT"=:A0 AND "OBJECT"=:A1 AND "SUBOBJECT"=:A2 AND "NRRANGENR"=:A3 AND "TOYEAR"=:A4 FOR UPDATE

please suggest the solution to avoid the above locks.

Regards,

Jagadeeshwar.