Oracle Database Discussions

Hi,

I am facing the following in my DB.Oracle version is 11.1.0.7.0

Event Waits Time(s) Avg wait (ms) % DB time Wait Class
latch: cache buffers chains 37,910,465 17,344 0 42.64 Concurrency

I checked the SQL causing the wait using following query.

select count(*), SQL_ID from gv$active_session_history where event like '%cache buffers%' group by SQL_ID;

COUNT(*) SQL_ID
---------- -------------
1
3 3wunvbmu64d8j
2 9q2ux8f92za7m
36000 47g8dw48ghk5s
2 5arqxftxr7tjr

Also i tried the following.
select count(*) child_count, sum(gets) sum_gets, sum(misses) sum_misses, sum(sleeps) sum_sleeps from v$latch_children where name = 'cache buffers chains';
CHILD_COUNT SUM_GETS SUM_MISSES SUM_SLEEPS
----------- ---------- ---------- ----------
65536 1.5723E+10 3163139088 56744600
SQL> select P1 from v$session_wait where event = 'cache buffer chains';

no rows selected

How do i proceed with this?
SQL ID - 47g8dw48ghk5s is an update query.Can increasing freelists of this table help ??Kindly assist me.

Thanks.