[置顶] Bug 11775332 - cluvfy fails with PRVF-5636 with DNS response timeout error [ID 11775332.8]

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当CLUVFY发现未知主机的DNS名称解析超过15秒时，会出现PRVF-5636错误。此错误提示用户修复DNS设置以减少解析时间。11.2.0.4版本及之后的FuturePatchSet中修复了错误信息不清晰的问题。

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Bug 11775332 cluvfy fails with PRVF-5636 withDNS response timeout error but error text is not clear

Thisnote gives a brief overview of bug 11775332.
The content was last updated on:17-JUN-2013
Click here fordetails of each of the sections below.

Affects:

*Product (Component)*	Oracle Server (OPSM)
*Range of versions believed* to be affected**	Versions BELOW 12.1
*Versions confirmed* as being affected**	11.2.0.2
Platforms affected	Generic (all / most platforms affected)

Fixed:

This issue is fixed in		12.1 (Future Release) 11.2.0.4 (Future Patch Set)
Symptoms:	Related To:
PRVF-5636	Cluster Ready Services / Parallel Server Management

Description

When cluvfy finds outthat nslookup name resolution for an

unknown host takeslonger than 15 seconds, it issues error

PRVF-5636.

eg:

PRVF-5636 : The DNS response time for anunreachable node exceeded

"15000" ms on followingnodes...

Checking the file "/etc/resolv.conf" to make sure only one of domain and search entries is defined
File "/etc/resolv.conf" does not have both domain and search entries defined
Checking if domain entry in file "/etc/resolv.conf" is consistent across the nodes...
domain entry in file "/etc/resolv.conf" is consistent across nodes
Checking if search entry in file "/etc/resolv.conf" is consistent across the nodes...
search entry in file "/etc/resolv.conf" is consistent across nodes
Checking file "/etc/resolv.conf" to make sure that only one search entry is defined
All nodes have one search entry defined in file "/etc/resolv.conf"
Checking all nodes to make sure that search entry is "oracle.com" as found on node "rac2"
All nodes of the cluster have same value for 'search'
Checking DNS response time for an unreachable node
Node Name Status
------------------------------------ ------------------------
rac2 failed
rac1 passed
PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes: rac2

The expectation isthat the user fixes the DNS so that name resolution

for unknown hosttakes less than 15 seconds. The aboveerror message

printed by cluvfy didnot make this expectation clear.

With the fix for thisbug, the error message makes it clear that

name resolution forunknown host should take <= 15s.

Please note that evenwith the fix, nslookup for unknown host should

still take <15sand cluvfy will still fail if it does not. With the fix,

the difference isthat the error message will be clearer.

Workaround

There is no workaround to change the errormessage.

To stop getting the error, engageSystem/Network Administrator to find

out why nslookup for unknown host takes solong and fix it.

Please note: The above is a summary description only. Actual symptoms can vary. Matching to any symptoms here does not confirm that you are encountering this problem. For questions about this bug please consult Oracle Support.

References

Bug:11775332 (This linkwill only work for PUBLISHED bugs)
Note:245840.1 Informationon the sections in this article