某客户数据库RAC架构，未做业务拆分，私网流量过高导致RAC其中一个节点宕机，并且该故障节点集群无法启动。
环境：
2021-12-13T16:12:32.211473+08:00
LMON (ospid: 170442) drops the IMR request from LMSK (ospid: 170520) because IMR is in progress and inst 2 is marked bad.
2021-12-13T16:12:32.211526+08:00
Please check USER trace file for more detail.
2021-12-13T16:12:32.211809+08:00
LMON (ospid: 170442) drops the IMR request from LMS6 (ospid: 170465) because IMR is in progress and inst 2 is marked bad.
2021-12-13T16:12:32.212013+08:00
USER (ospid: 170500) issues an IMR to resolve the situation
Please check USER trace file for more detail.
2021-12-13T16:12:32.212419+08:00
LMON (ospid: 170442) drops the IMR request from LMSF (ospid: 170500) because IMR is in progress and inst 2 is marked bad.
2021-12-13T16:12:32.214587+08:00
USER (ospid: 170539) issues an IMR to resolve the situation
Please check USER trace file for more detail.
2021-12-13T16:12:32.214929+08:00
LMON (ospid: 170442) drops the IMR request from LMSP (ospid: 170539) because IMR is in progress and inst 2 is marked bad.
2021-12-13T16:12:32.215318+08:00
USER (ospid: 170456) issues an IMR to resolve the situation
Please check USER trace file for more detail.
2021-12-13T16:12:32.215603+08:00
LMON (ospid: 170442) drops the IMR request from LMS4 (ospid: 170456) because IMR is in progress and inst 2 is marked bad.
Detected an inconsistent instance membership by instance 2
Errors in file /u01/app/oracle/diag/rdbms/xxxxx/xxxxx1/trace/xxxxx1_lmon_170442.trc (incident=819377):
ORA-29740: evicted by instance number 2, group incarnation 6
Incident details in: /u01/app/oracle/diag/rdbms/xxxxx/xxxxx1/incident/incdir_819377/xxxxx1_lmon_170442_i819377.trc
2021-12-13T16:12:33.213098+08:00
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
2021-12-13T16:12:33.213205+08:00
Errors in file /u01/app/oracle/diag/rdbms/xxxxx/xxxxx1/trace/xxxxx1_lmon_170442.trc:
ORA-29740: evicted by instance number 2, group incarnation 6
Errors in file /u01/app/oracle/diag/rdbms/xxxxx/xxxxx1/trace/xxxxx1_lmon_170442.trc (incident=819378):
ORA-29740 [] [] [] [] [] [] [] [] [] [] [] []
Incident details in: /u01/app/oracle/diag/rdbms/xxxxx/xxxxx1/incident/incdir_819378/xxxxx1_lmon_170442_i819378.trc
2021-12-13T16:12:33.423825+08:00
USER (ospid: 330352): terminating the instance due to error 481
2021-12-13T16:12:44.602060+08:00
Instance terminated by USER, pid = 330352
2021-12-14T00:02:47.101462+08:00
Starting ORACLE instance (normal) (OS id: 417848)
2021-12-14T00:02:47.109132+08:00
CLI notifier numLatches:131 maxDescs:212962021-12-13 16:12:33.945 [ORAAGENT(170290)]CRS-5011: Check of
resource "xxxxx" failed: details at "(:CLSN00007:)" in
"/u01/app/grid/diag/crs/xxxxx01/crs/trace/crsd_oraagent_orac
le.trc"
2021-12-13 16:16:43.717 [ORAROOTAGENT(5870)]CRS-5818:
Aborted command check for resource ora.crsd. Details at
(:CRSAGF00113:) {0:5:3} in
/u01/app/grid/diag/crs/xxxxx01/crs/trace/ohasd_orarootagent_
root.trc.alert.log:
2021-12-13 20:18:59.139 [OHASD(188988)]CRS-8500: Oracle Clusterware OHASD process is starting with operating system process ID 188988
2021-12-13 20:18:59.141 [OHASD(188988)]CRS-0714: Oracle Clusterware Release 12.2.0.1.0.
2021-12-13 20:18:59.154 [OHASD(188988)]CRS-2112: The OLR service started on node xxxxx01.
2021-12-13 20:18:59.162 [OHASD(188988)]CRS-8017: location: /etc/oracle/lastgasp has 2 reboot advisory log files, 0 were announced and 0 errors occurred
2021-12-13 20:18:59.162 [OHASD(188988)]CRS-1301: Oracle High Availability Service started on node xxxxx01.
2021-12-13 20:18:59.288 [ORAAGENT(189092)]CRS-8500: Oracle Clusterware ORAAGENT process is starting with operating system process ID 189092
2021-12-13 20:18:59.310 [CSSDAGENT(189114)]CRS-8500: Oracle Clusterware CSSDAGENT process is starting with operating system process ID 189114
2021-12-13 20:18:59.317 [CSSDMONITOR(189121)]CRS-8500: Oracle Clusterware CSSDMONITOR process is starting with operating system process ID 189121
2021-12-13 20:18:59.322 [ORAROOTAGENT(189103)]CRS-8500: Oracle Clusterware ORAROOTAGENT process is starting with operating system process ID 189103
2021-12-13 20:18:59.556 [ORAAGENT(189163)]CRS-8500: Oracle Clusterware ORAAGENT process is starting with operating system process ID 189163
2021-12-13 20:18:59.602 [MDNSD(189183)]CRS-8500: Oracle Clusterware MDNSD process is starting with operating system process ID 189183
2021-12-13 20:18:59.605 [EVMD(189184)]CRS-8500: Oracle Clusterware EVMD process is starting with operating system process ID 189184
2021-12-13 20:19:00.641 [GPNPD(189222)]CRS-8500: Oracle Clusterware GPNPD process is starting with operating system process ID 189222
2021-12-13 20:19:01.638 [GPNPD(189222)]CRS-2328: GPNPD started on node xxxxx01.
2021-12-13 20:19:01.654 [GIPCD(189284)]CRS-8500: Oracle Clusterware GIPCD process is starting with operating system process ID 189284
2021-12-13 20:19:15.462 [CSSDMONITOR(189500)]CRS-8500: Oracle Clusterware CSSDMONITOR process is starting with operating system process ID 189500
2021-12-13 20:19:15.633 [CSSDAGENT(189591)]CRS-8500: Oracle Clusterware CSSDAGENT process is starting with operating system process ID 189591
2021-12-13 20:19:16.805 [OCSSD(189606)]CRS-8500: Oracle Clusterware OCSSD process is starting with operating system process ID 189606
2021-12-13 20:19:17.834 [OCSSD(189606)]CRS-1713: CSSD daemon is started in hub mode
2021-12-13 20:19:18.936 [OCSSD(189606)]CRS-1707: Lease acquisition for node xxxxx01 number 1 completed
2021-12-13 20:19:20.025 [OCSSD(189606)]CRS-1605: CSSD voting file is online: /dev/emcpowerp; details in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ocssd.trc.
2021-12-13 20:19:20.029 [OCSSD(189606)]CRS-1605: CSSD voting file is online: /dev/emcpowerq; details in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ocssd.trc.
2021-12-13 20:19:20.033 [OCSSD(189606)]CRS-1605: CSSD voting file is online: /dev/emcpowerr; details in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ocssd.trc.
2021-12-13 20:23:59.366 [ORAROOTAGENT(189103)]CRS-5818: Aborted command check for resource ora.storage. Details at (:CRSAGF00113:) {0:0:2} in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ohasd_orarootagent_root.trc.
2021-12-13 20:25:12.427 [ORAROOTAGENT(195387)]CRS-8500: Oracle Clusterware ORAROOTAGENT process is starting with operating system process ID 195387
2021-12-13 20:29:12.450 [ORAROOTAGENT(195387)]CRS-5818: Aborted command check for resource ora.storage. Details at (:CRSAGF00113:) {0:8:2} in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ohasd_orarootagent_root.trc.
2021-12-13 20:29:15.772 [CSSDAGENT(189591)]CRS-5818: Aborted command start for resource ora.cssd. Details at (:CRSAGF00113:) {0:5:3} in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ohasd_cssdagent_root.trc.
2021-12-13 20:29:16.065 [OHASD(188988)]CRS-2757: Command Start timed out waiting for response from the resource ora.cssd. Details at (:CRSPE00221:) {0:5:3} in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ohasd.trc.
2021-12-13 20:29:16.772 [OCSSD(189606)]CRS-1656: The CSS daemon is terminating due to a fatal error; Details at (:CSSSC00012:) in /u01/app/grid/diag/crs/xxxxx01/crs/trace/ocssd.trc
2021-12-13 20:29:16.773 [OCSSD(189606)]CRS-1603: CSSD on node xxxxx01 has been shut down.
2021-12-13 20:29:21.773 [OCSSD(189606)]CRS-8503: Oracle Clusterware process OCSSD with operating system process ID 189606 experienced fatal signal or exception code 6.
2021-12-13T20:29:21.777920+08:00
Errors in file /u01/app/grid/diag/crs/xxxxx01/crs/trace/ocssd.trc (incident=1):
CRS-8503 [] [] [] [] [] [] [] [] [] [] [] []
Incident details in: /u01/app/grid/diag/crs/xxxxx01/crs/incident/incdir_1/ocssd_i1.trc
###################################################
ocssd.log:
2021-12-13 20:19:51.063 : CSSD:1538770688: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536816, LATS 3884953830, lastSeqNo 128536813, uniqueness 1565321051, timestamp 1607861990/3882768200
2021-12-13 20:19:51.063 : CSSD:1530885888: clssscSelect: gipcwait returned with status gipcretPosted (17)
2021-12-13 20:19:51.064 :GIPCHDEM:3374835456: gipchaDaemonProcessClientReq: processing req 0x7f4c28038cf0 type gipchaClientReqTypePublish (1)
2021-12-13 20:19:51.064 : CSSD:3396663040: clssscWaitOnEventValue: after CmInfo State val 3, eval 1 waited 1000 with cvtimewait status 4294967186
2021-12-13 20:19:51.064 :GIPCGMOD:3376412416: gipcmodGipcCallbackEndpClosed: [gipc] Endpoint close for endp 0x7f4c280337d0 [00000000000004b8] { gipcEndpoint : localAddr (dying), remoteAddr (dying), numPend 0, numReady 1, numDone 0, numDead 0, numTransfer 0, objFlags 0x2, pidPeer 0, readyRef 0x1cdefd0, ready 1, wobj 0x7f4c28035d60, sendp (nil) status 13flags 0x2e0b860a, flags-2 0x0, usrFlags 0x0 }
2021-12-13 20:19:51.064 :GIPCHDEM:3374835456: gipchaDaemonProcessClientReq: processing req 0x7f4c70097550 type gipchaClientReqTypeDeleteName (12)
2021-12-13 20:19:51.064 : CSSD:1530885888: clssscConnect: endp 0x83e - cookie 0x1d013e0 - addr gipcha://xxxxx02:nm2_xxxxx-cluster
2021-12-13 20:19:51.064 : CSSD:1530885888: clssnmRetryConnections: Probing node xxxxx02 (2), probendp(0x83e)
2021-12-13 20:19:51.064 :GIPCHTHR:3376412416: gipchaWorkerProcessClientConnect: starting resolve from connect for host:xxxxx02, port:nm2_xxxxx-cluster, cookie:0x7f4c28038ed0
2021-12-13 20:19:51.064 :GIPCHDEM:3374835456: gipchaDaemonProcessClientReq: processing req 0x7f4c7009a2e0 type gipchaClientReqTypeResolve (4)
2021-12-13 20:19:51.064 : CSSD:3359094528: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536817, LATS 3884953830, lastSeqNo 128536814, uniqueness 1565321051, timestamp 1607861990/3882768350
2021-12-13 20:19:51.899 : CSSD:3410851584: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2021-12-13 20:19:52.064 : CSSD:3396663040: clssscWaitOnEventValue: after CmInfo State val 3, eval 1 waited 1000 with cvtimewait status 4294967186
2021-12-13 20:19:52.064 : CSSD:1538770688: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536819, LATS 3884954830, lastSeqNo 128536816, uniqueness 1565321051, timestamp 1607861991/3882769200
2021-12-13 20:19:52.065 : CSSD:3359094528: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536820, LATS 3884954830, lastSeqNo 128536817, uniqueness 1565321051, timestamp 1607861991/3882769360
2021-12-13 20:19:52.900 : CSSD:3410851584: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2021-12-13 20:19:53.064 : CSSD:3396663040: clssscWaitOnEventValue: after CmInfo State val 3, eval 1 waited 1000 with cvtimewait status 4294967186
2021-12-13 20:19:53.066 : CSSD:1538770688: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536822, LATS 3884955830, lastSeqNo 128536819, uniqueness 1565321051, timestamp 1607861992/3882770200
2021-12-13 20:19:53.068 : CSSD:3359094528: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536823, LATS 3884955830, lastSeqNo 128536820, uniqueness 1565321051, timestamp 1607861992/3882770360
2021-12-13 20:19:53.902 : CSSD:3410851584: clsssc_CLSFAInit_CB: System not ready for CLSFA initialization
2021-12-13 20:19:54.064 : CSSD:3396663040: clssscWaitOnEventValue: after CmInfo State val 3, eval 1 waited 1000 with cvtimewait status 4294967186
2021-12-13 20:19:54.067 : CSSD:1538770688: clssnmvDHBValidateNCopy: node 2, xxxxx02, has a disk HB, but no network HB, DHB has rcfg 460477135, wrtcnt, 128536825, LATS 3884956830, lastSeqNo 128536822, uniqueness 1565321051, timestamp 1607861993/3882771200[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 xxxxx02-priv (xxx.xx.11.37) 0.112 ms 0.212 ms 0.206 ms
[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 xxxxx02-priv (xxx.xx.11.37) 0.113 ms 0.216 ms *
[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 xxxxx02-priv (xxx.xx.11.37) 0.121 ms 0.087 ms 0.197 ms
[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 * xxxxx02-priv (xxx.xx.11.37) 0.058 ms *
[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 xxxxx02-priv (xxx.xx.11.37) 0.217 ms 0.188 ms 0.187 ms
[root@xxxxx01 ~]# traceroute -r xxx.xx.11.37
traceroute to xxx.xx.11.37 (xxx.xx.11.37), 30 hops max, 60 byte packets
1 * * *
2 xxxxx02-priv (xxx.xx.11.37) 0.068 ms * *
[root@xxxxx01 ~]#net.ipv4.ipfrag_high_thresh = 16194304
net.ipv4.ipfrag_low_thresh = 15145728
net.core.rmem_max = 16777216
net.core.rmem_default = 4777216
net.core.wmem_max = 16777216
net.core.wmem_default = 4777216系统中当数据包传输发生错误，会进行碎片整理，有效的数据包被保留，而无效的数据包被丢弃，ipfrag参数指定了碎片整理时的最大/最小内存。
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