ADDM Reports bug:significant Virtual memory paging is detected on the host operating system

When viewing ADDM (database version for Oracle 10.2.0.5.0) report, it was found that one of the conclusions was very unreliable: significant virtual memory paging was detected on the host operating sys TEM, the specific contents are as follows:

Finding 2:100% Impact (3930 seconds)

-------------------------------------

Significant virtual memory paging is detected on the host operating system.

Recommendation 1:host Configuration, 100% benefit (3930 seconds)

Action:host operating system was experiencing significant paging but no

Particular root cause could be detected. Investigate processes that

Do not belong to this instance running on the host that is consuming

Significant amount of virtual memory. Also consider adding more

Physical memory to the host.

The use of Nmon monitoring did not find a large amount of virtual memory, search for a bit, found that this is a bug caused. Oracle 10g, Oracle 11 has this problem.

Official ADDM Reports significant Virtual Memory Paging on Linux when None is occurring (document ID 1322964.1) is described below

Symptoms

After upgrading the database to 10.2.0.5, the ADDM report on Linux operation system may include findings on "significant V Irtual Memory Paging ":

Finding 1:100% Impact (32719 seconds)
--------------------------------------
Significant virtual memory paging is detected on the host operating system.

Recommendation 1:host Configuration, 100% benefit (32719 seconds)
Action:host operating system was experiencing significant paging 
No particular root cause could be detected. Investigate processes that
Belong to this instance running on the host 
Consuming significant amount of virtual memory. Also consider adding more
Physical memory to the host.

There is no evidence on OS level of any problem with virtual memory paging. To verify this is not really observing a memory problem, look at an operating system memory tool, such as Vmstat:

 oracle$ vmstat 5 5procs-----------memory-------------Swap-------io------System-------CPU------r B SWPD fre E buff cache si so bi bo in CS us sy ID WA St 1 0 670056 1184580 35772 12809336 0 0 26 4 0 1 5 3 27 68 1 0 0 0 670028 1183624 35788 12810980 0 0 7 22 1298 2534 3 1 90 6 0 1 0 670016     1171840 35804 12813436 0 0 2 34 1621 2691 5 1 77 16 0 1 0 669996 1175536 35816 12817064 0 0 6 1424 2957 9 2 0 0 0 669968 1183408 35840 12820460 0 0 8 1430 2850 3 0 

Note:under swap, si and so show a value of 0.
As above, if there is no abnormal figures and you is still seeing this warning, you might me hitting this problem

Cause

This issue can is seen from 10.2.0.5 to 11.2.0.2

The problem is caused by wrong values in V$osstat as explained in:
Bug 10148787 ADDM REPORTS VIRTUAL MEMORY PAGING after applying 10.2.0.5 
and unpublished  Bug 11712010VIRTUAL MEMORY PAGING on 11.2.0.2 DATABASES. 

ORACLE 10.2.0.5 can fix this bug by downloading the patch 12347332:tracking bug to FIX ADDM incorrectly REPORTING PAGING on 10.2.0.5

ADDM Reports bug:significant Virtual memory paging is detected on the host operating system