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Kay
2019-05-23
12.1.0.2三节点rac部分sql被hang住有大量"gc current request"等待事件

三节点的rac,部分sql被hang住,已经做了hang、systemstatedump,awr,在附件中


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Kay
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Kay
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Kay
上传附件:systemStatedump.zip
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Kay

查看了下12c有更新过补丁

bd1.png

bd2.png


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盖国强

将 netstat -s 和 netstat -su 的信息发上来看看。

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Kay

@盖总,已收集3个节点信息,请查看

231节点1

[root@hbdzzw01 ~]# netstat -s

Ip:

4894820317 total packets received

81 with invalid addresses

0 forwarded

0 incoming packets discarded

3858072622 incoming packets delivered

3601457642 requests sent out

1353 outgoing packets dropped

2465 fragments dropped after timeout

1218952454 reassemblies required

182280690 packets reassembled ok

17385041 packet reassembles failed

203061800 fragments received ok

234 fragments failed

1219264042 fragments created

Icmp:

1643073 ICMP messages received

523 input ICMP message failed.

ICMP input histogram:

destination unreachable: 1567409

timeout in transit: 346

redirects: 2

echo requests: 70738

echo replies: 4518

timestamp request: 30

address mask request: 4

1645192 ICMP messages sent

0 ICMP messages failed

ICMP output histogram:

destination unreachable: 1569426

time exceeded: 456

echo request: 4542

echo replies: 70738

timestamp replies: 30

IcmpMsg:

InType0: 4518

InType3: 1567409

InType5: 2

InType8: 70738

InType11: 346

InType13: 30

InType17: 4

InType37: 26

OutType0: 70738

OutType3: 1569426

OutType8: 4542

OutType11: 456

OutType14: 30

Tcp:

1047465 active connections openings

976661 passive connection openings

10475 failed connection attempts

395069 connection resets received

188 connections established

1315223772 segments received

1865867337 segments send out

14540545 segments retransmited

0 bad segments received.

675619 resets sent

Udp:

2538156309 packets received

1587043 packets to unknown port received.

197258 packet receive errors

2552538087 packets sent

RcvbufErrors: 197258

SndbufErrors: 51

IgnoredMulti: 2488151

UdpLite:

TcpExt:

33 SYN cookies sent

41 SYN cookies received

166 resets received for embryonic SYN_RECV sockets

626755 TCP sockets finished time wait in fast timer

10338 packets rejects in established connections because of timestamp

13243612 delayed acks sent

10002 delayed acks further delayed because of locked socket

Quick ack mode was activated 3780828 times

51 times the listen queue of a socket overflowed

84 SYNs to LISTEN sockets ignored

674396497 packets directly queued to recvmsg prequeue.

2072572590 packets directly received from backlog

181835812533 packets directly received from prequeue

132227316 packets header predicted

662923979 packets header predicted and directly queued to user

58017596 acknowledgments not containing data received

911303953 predicted acknowledgments

1200491 times recovered from packet loss due to SACK data

Detected reordering 140 times using FACK

Detected reordering 2307 times using SACK

Detected reordering 972 times using time stamp

4027 congestion windows fully recovered

2355 congestion windows partially recovered using Hoe heuristic

TCPDSACKUndo: 26438

29449 congestion windows recovered after partial ack

TCPLostRetransmit: 13304

13268 timeouts after SACK recovery

32946 timeouts in loss state

1368903 fast retransmits

32137 forward retransmits

354608 retransmits in slow start

1922623 other TCP timeouts

TCPLossProbes: 10425639

TCPLossProbeRecovery: 6050097

119962 sack retransmits failed

3782001 DSACKs sent for old packets

9 DSACKs sent for out of order packets

1554528 DSACKs received

1838 DSACKs for out of order packets received

145042 connections reset due to unexpected data

33118 connections reset due to early user close

454 connections aborted due to timeout

TCPDSACKIgnoredOld: 468

TCPDSACKIgnoredNoUndo: 1237753

TCPSpuriousRTOs: 173

TCPSackShifted: 131873

TCPSackMerged: 156122

TCPSackShiftFallback: 1573386

IPReversePathFilter: 23267

TCPReqQFullDoCookies: 33

TCPRetransFail: 1

TCPRcvCoalesce: 28023612

TCPOFOQueue: 72366

TCPOFOMerge: 9

TCPChallengeACK: 57271

TCPSpuriousRtxHostQueues: 814

TCPAutoCorking: 34662682

TCPFromZeroWindowAdv: 25974

TCPToZeroWindowAdv: 25974

TCPWantZeroWindowAdv: 346477

TCPSynRetrans: 2664

TCPOrigDataSent: 1713530252

TCPHystartTrainDetect: 38598

TCPHystartTrainCwnd: 754992

TCPHystartDelayDetect: 166

TCPHystartDelayCwnd: 4540

TCPACKSkippedPAWS: 6802

TCPACKSkippedSeq: 13045

IpExt:

InMcastPkts: 271030

OutMcastPkts: 89079

InBcastPkts: 2488543

OutBcastPkts: 193

InOctets: 3393970367372

OutOctets: 4391647611629

InMcastOctets: 42970039

OutMcastOctets: 14266895

InBcastOctets: 1368678924

OutBcastOctets: 66988

InNoECTPkts: 5172633735

InECT0Pkts: 13947

[root@hbdzzw01 ~]# netstat -su

IcmpMsg:

InType0: 4518

InType3: 1567625

InType5: 2

InType8: 70738

InType11: 346

InType13: 30

InType17: 4

InType37: 26

OutType0: 70738

OutType3: 1569642

OutType8: 4542

OutType11: 456

OutType14: 30

Udp:

2538215280 packets received

1587259 packets to unknown port received.

197258 packet receive errors

2552597061 packets sent

RcvbufErrors: 197258

SndbufErrors: 51

IgnoredMulti: 2488172

UdpLite:

IpExt:

InMcastPkts: 271030

OutMcastPkts: 89079

InBcastPkts: 2488564

OutBcastPkts: 193

InOctets: 3394022137115

OutOctets: 4391730270428

InMcastOctets: 42970039

OutMcastOctets: 14266895

InBcastOctets: 1368690365

OutBcastOctets: 66988

InNoECTPkts: 5172746937

InECT0Pkts: 13947

232节点2

[root@hbdzzw02 ~]# netstat -s

Ip:

5024589102 total packets received

220 with invalid addresses

0 forwarded

0 incoming packets discarded

3899238220 incoming packets delivered

3610924308 requests sent out

26198 outgoing packets dropped

103 dropped because of missing route

2495 fragments dropped after timeout

1319329460 reassemblies required

194060698 packets reassembled ok

10373188 packet reassembles failed

180936809 fragments received ok

114 fragments failed

1172497718 fragments created

Icmp:

9255671 ICMP messages received

207 input ICMP message failed.

ICMP input histogram:

destination unreachable: 1615516

timeout in transit: 370

redirects: 2

echo requests: 7637910

echo replies: 1794

timestamp request: 39

address mask request: 6

9258506 ICMP messages sent

0 ICMP messages failed

ICMP output histogram:

destination unreachable: 1617417

time exceeded: 381

echo request: 2759

echo replies: 7637910

timestamp replies: 39

IcmpMsg:

InType0: 1794

InType3: 1615516

InType5: 2

InType8: 7637910

InType11: 370

InType13: 39

InType17: 6

InType37: 34

OutType0: 7637910

OutType3: 1617417

OutType8: 2759

OutType11: 381

OutType14: 39

Tcp:

605789 active connections openings

1118369 passive connection openings

10989 failed connection attempts

394871 connection resets received

204 connections established

1272296371 segments received

2897097092 segments send out

14936523 segments retransmited

1 bad segments received.

722622 resets sent

Udp:

2614696023 packets received

1628048 packets to unknown port received.

122190 packet receive errors

2605985695 packets sent

RcvbufErrors: 122190

IgnoredMulti: 2511106

UdpLite:

TcpExt:

64 SYN cookies sent

110 SYN cookies received

223 resets received for embryonic SYN_RECV sockets

466610 TCP sockets finished time wait in fast timer

8262 packets rejects in established connections because of timestamp

13110427 delayed acks sent

9538 delayed acks further delayed because of locked socket

Quick ack mode was activated 3994553 times

83 times the listen queue of a socket overflowed

147 SYNs to LISTEN sockets ignored

653226771 packets directly queued to recvmsg prequeue.

966591553 packets directly received from backlog

146124467901 packets directly received from prequeue

85911303 packets header predicted

639294122 packets header predicted and directly queued to user

49910190 acknowledgments not containing data received

935248752 predicted acknowledgments

1244778 times recovered from packet loss due to SACK data

Detected reordering 116 times using FACK

Detected reordering 1534 times using SACK

Detected reordering 834 times using time stamp

2743 congestion windows fully recovered

1802 congestion windows partially recovered using Hoe heuristic

TCPDSACKUndo: 26463

25464 congestion windows recovered after partial ack

TCPLostRetransmit: 15501

25909 timeouts after SACK recovery

35745 timeouts in loss state

1467729 fast retransmits

24205 forward retransmits

390111 retransmits in slow start

2015145 other TCP timeouts

TCPLossProbes: 10562580

TCPLossProbeRecovery: 6320488

123820 sack retransmits failed

3996415 DSACKs sent for old packets

3 DSACKs sent for out of order packets

1077485 DSACKs received

300 DSACKs for out of order packets received

141152 connections reset due to unexpected data

38776 connections reset due to early user close

437 connections aborted due to timeout

TCPDSACKIgnoredOld: 390

TCPDSACKIgnoredNoUndo: 799297

TCPSpuriousRTOs: 77

TCPSackShifted: 157769

TCPSackMerged: 211928

TCPSackShiftFallback: 1611333

IPReversePathFilter: 33542

TCPReqQFullDoCookies: 64

TCPRetransFail: 2

TCPRcvCoalesce: 16152337

TCPOFOQueue: 102959

TCPOFOMerge: 3

TCPChallengeACK: 52168

TCPSYNChallenge: 1

TCPSpuriousRtxHostQueues: 460

TCPAutoCorking: 31340082

TCPFromZeroWindowAdv: 9883

TCPToZeroWindowAdv: 9883

TCPWantZeroWindowAdv: 204390

TCPSynRetrans: 6046

TCPOrigDataSent: 2785860744

TCPHystartTrainDetect: 39122

TCPHystartTrainCwnd: 747814

TCPHystartDelayDetect: 104

TCPHystartDelayCwnd: 2677

TCPACKSkippedPAWS: 4466

TCPACKSkippedSeq: 10673

TCPACKSkippedTimeWait: 7

IpExt:

InMcastPkts: 282538

OutMcastPkts: 92679

InBcastPkts: 2512035

OutBcastPkts: 200

InOctets: 3344118865999

OutOctets: 5822450278612

InMcastOctets: 45153198

OutMcastOctets: 14881137

InBcastOctets: 1381466833

OutBcastOctets: 79659

InNoECTPkts: 5275125891

InECT0Pkts: 49984

[root@hbdzzw02 ~]# netstat -su

IcmpMsg:

InType0: 1794

InType3: 1615516

InType5: 2

InType8: 7637942

InType11: 370

InType13: 39

InType17: 6

InType37: 34

OutType0: 7637942

OutType3: 1617417

OutType8: 2759

OutType11: 381

OutType14: 39

Udp:

2614750944 packets received

1628048 packets to unknown port received.

122190 packet receive errors

2606039908 packets sent

RcvbufErrors: 122190

IgnoredMulti: 2511115

UdpLite:

IpExt:

InMcastPkts: 282538

OutMcastPkts: 92679

InBcastPkts: 2512044

OutBcastPkts: 200

InOctets: 3344171553345

OutOctets: 5822493804152

InMcastOctets: 45153198

OutMcastOctets: 14881137

InBcastOctets: 1381472017

OutBcastOctets: 79659

InNoECTPkts: 5275227869

InECT0Pkts: 49987

233节点3

[root@hbdzzw03 ~]# netstat -s

Ip:

4543442754 total packets received

433 with invalid addresses

0 forwarded

0 incoming packets discarded

3726333242 incoming packets delivered

3473880181 requests sent out

103236 outgoing packets dropped

871 dropped because of missing route

2080 fragments dropped after timeout

983541040 reassemblies required

166505513 packets reassembled ok

8049605 packet reassembles failed

176938340 fragments received ok

2559 fragments failed

1131723665 fragments created

Icmp:

1790210 ICMP messages received

275 input ICMP message failed.

ICMP input histogram:

destination unreachable: 1720319

timeout in transit: 426

redirects: 2

echo requests: 67755

echo replies: 1637

timestamp request: 36

address mask request: 4

1792599 ICMP messages sent

0 ICMP messages failed

ICMP output histogram:

destination unreachable: 1722497

time exceeded: 305

echo request: 2006

echo replies: 67755

timestamp replies: 36

IcmpMsg:

InType0: 1637

InType3: 1720319

InType5: 2

InType8: 67755

InType11: 426

InType13: 36

InType17: 4

InType37: 31

OutType0: 67755

OutType3: 1722497

OutType8: 2006

OutType11: 305

OutType14: 36

Tcp:

595237 active connections openings

1005033 passive connection openings

11036 failed connection attempts

395642 connection resets received

199 connections established

1351611580 segments received

2318300633 segments send out

14635043 segments retransmited

1 bad segments received.

704887 resets sent

InCsumErrors: 1

Udp:

2369845769 packets received

1737635 packets to unknown port received.

94782 packet receive errors

2387242605 packets sent

RcvbufErrors: 94782

IgnoredMulti: 2514056

UdpLite:

TcpExt:

3 SYN cookies sent

9 SYN cookies received

214 resets received for embryonic SYN_RECV sockets

346530 TCP sockets finished time wait in fast timer

7602 packets rejects in established connections because of timestamp

17304138 delayed acks sent

12044 delayed acks further delayed because of locked socket

Quick ack mode was activated 3838278 times

43 times the listen queue of a socket overflowed

46 SYNs to LISTEN sockets ignored

712959984 packets directly queued to recvmsg prequeue.

811463201 packets directly received from backlog

183994757024 packets directly received from prequeue

76182224 packets header predicted

697970575 packets header predicted and directly queued to user

71632922 acknowledgments not containing data received

969644040 predicted acknowledgments

1219509 times recovered from packet loss due to SACK data

Detected reordering 105 times using FACK

Detected reordering 1570 times using SACK

Detected reordering 771 times using time stamp

2799 congestion windows fully recovered

1657 congestion windows partially recovered using Hoe heuristic

TCPDSACKUndo: 26259

25175 congestion windows recovered after partial ack

TCPLostRetransmit: 14816

10427 timeouts after SACK recovery

32688 timeouts in loss state

1488142 fast retransmits

38905 forward retransmits

360722 retransmits in slow start

1950668 other TCP timeouts

TCPLossProbes: 10357146

TCPLossProbeRecovery: 6165063

119683 sack retransmits failed

3838570 DSACKs sent for old packets

3 DSACKs sent for out of order packets

1109719 DSACKs received

244 DSACKs for out of order packets received

142362 connections reset due to unexpected data

37525 connections reset due to early user close

595 connections aborted due to timeout

TCPDSACKIgnoredOld: 1093

TCPDSACKIgnoredNoUndo: 814957

TCPSpuriousRTOs: 100

TCPSackShifted: 261207

TCPSackMerged: 473273

TCPSackShiftFallback: 1631568

IPReversePathFilter: 23760

TCPReqQFullDoCookies: 3

TCPRetransFail: 10

TCPRcvCoalesce: 16700961

TCPOFOQueue: 49227

TCPOFOMerge: 3

TCPChallengeACK: 50655

TCPSpuriousRtxHostQueues: 193

TCPAutoCorking: 45827948

TCPFromZeroWindowAdv: 6951

TCPToZeroWindowAdv: 6951

TCPWantZeroWindowAdv: 200586

TCPSynRetrans: 2474

TCPOrigDataSent: 2203149503

TCPHystartTrainDetect: 39101

TCPHystartTrainCwnd: 753168

TCPHystartDelayDetect: 127

TCPHystartDelayCwnd: 3800

TCPACKSkippedPAWS: 4587

TCPACKSkippedSeq: 8519

TCPACKSkippedTimeWait: 1

IpExt:

InMcastPkts: 282244

OutMcastPkts: 97680

InBcastPkts: 2514978

OutBcastPkts: 503

InOctets: 2616688139842

OutOctets: 4849270034208

InMcastOctets: 45154988

OutMcastOctets: 15511205

InBcastOctets: 1383180520

OutBcastOctets: 225154

InNoECTPkts: 4600220754

InECT0Pkts: 24698

[root@hbdzzw03 ~]# netstat -su

IcmpMsg:

InType0: 1637

InType3: 1720319

InType5: 2

InType8: 67755

InType11: 426

InType13: 36

InType17: 4

InType37: 31

OutType0: 67755

OutType3: 1722497

OutType8: 2006

OutType11: 305

OutType14: 36

Udp:

2369870340 packets received

1737635 packets to unknown port received.

94782 packet receive errors

2387268371 packets sent

RcvbufErrors: 94782

IgnoredMulti: 2514065

UdpLite:

IpExt:

InMcastPkts: 282244

OutMcastPkts: 97680

InBcastPkts: 2514987

OutBcastPkts: 503

InOctets: 2616704689734

OutOctets: 4849307243776

InMcastOctets: 45154988

OutMcastOctets: 15511205

InBcastOctets: 1383185704

OutBcastOctets: 225154

InNoECTPkts: 4600265936

InECT0Pkts: 24698


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盖国强

注意这个信息:

17385041 packet reassembles failed


这是一个已知问题,在我们 3月号的技术通讯中就已经提到过了。你下载来看一下。

在以下链接中可以找到:

https://obs-emcsapp-public.obs.cn-north-4.myhuaweicloud.com:443/docDownload

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Kay

多谢盖总,问题已解决。经查证是机房交换机存在异常,更换交互机以及修改了交换机的MTU值后,gc current request已消失

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Kamus
问题已关闭: 问题已经得到解决
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