Intermittent ORA-12571 TNS:packet writer failure on Microsoft Hyper-V (Doc ID 1126255.1)

Last updated on APRIL 05, 2017

Applies to:

Oracle Net Services - Version 10.2.0.1 to 12.1.0.2 [Release 10.2 to 12.1]
Generic Windows

Symptoms

Connections on Microsoft Hyper-V virtualized environments intermittently fail, reporting ORA-12571 TNS:packet writer failure.
Oracle Net level 16 client trace shows that after attempting to send a packet the following error stack is seen:

[000200 27-MAY-2010 08:55:19:226] nioqsn: entry
[000200 27-MAY-2010 08:55:19:226] nioqsn: exit
[000200 27-MAY-2010 08:55:19:226] nioqrc: entry
[000200 27-MAY-2010 08:55:19:226] nsbasic_bsd: entry
[000200 27-MAY-2010 08:55:19:226] nsbasic_bsd: tot=0, plen=223.
[000200 27-MAY-2010 08:55:19:226] ntt2err: entry
[000200 27-MAY-2010 08:55:19:226] ntt2err: soc 6900 error - operation=6, ntresnt[0]=530, ntresnt[1]=54, ntresnt[2]=0
[000200 27-MAY-2010 08:55:19:226] ntt2err: exit
[000200 27-MAY-2010 08:55:19:226] nserror: entry
[000200 27-MAY-2010 08:55:19:226] nserror: nsres: id=0, op=67, ns=12571, ns2=12560; nt[0]=530, nt[1]=54, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
[000200 27-MAY-2010 08:55:19:226] nsbasic_bsd: exit (-1)
[000200 27-MAY-2010 08:55:19:226] nioqrc: send failed: bl = 1, nicbl = 1
[000200 27-MAY-2010 08:55:19:226] nioqper: error from nioqrc
[000200 27-MAY-2010 08:55:19:226] nioqper: ns main err code: 12571
[000200 27-MAY-2010 08:55:19:226] nioqper: ns (2) err code: 12560
[000200 27-MAY-2010 08:55:19:226] nioqper: nt main err code: 530
[000200 27-MAY-2010 08:55:19:226] nioqper: nt (2) err code: 54
[000200 27-MAY-2010 08:55:19:226] nioqper: nt OS err code: 0
[000200 27-MAY-2010 08:55:19:226] nioqer: entry
[000200 27-MAY-2010 08:55:19:226] nioqer: incoming err = 12150
[000200 27-MAY-2010 08:55:19:226] niomapnserror: entry
[000200 27-MAY-2010 08:55:19:226] niqme: entry
[000200 27-MAY-2010 08:55:19:226] niqme: reporting NS-12571 error as ORA-12571

Cause

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