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某省的生产库，收到告警短信 Oracle 目录 100%，登陆系统查看兼职被报错刷屏了。
Mon Oct 23 23:25:18 EAT 2017
Thread 1 advanced to log sequence 39420 (LGWR switch)
Current log# 7 seq# 39420 mem# 0: /vgxxx03/oradata/xxx/vg03_1_rd71.log
Current log# 7 seq# 39420 mem# 1: /vgxxx04/oradata/xxx/vg04_1_rd72.log
Tue Oct 24 01:02:04 EAT 2017
Errors in file /oracle/admin/esshlj/udump/xxx1_ora_11790.trc:
ORA-07445: 出现异常错误: 核心转储 [kadfih()+33] [SIGSEGV] [Address not mapped to object] [0x91A1A1A2A000F] [] []
Tue Oct 24 01:02:06 EAT 2017
Trace dumping is performing id=[cdmp_20171024010206]
Tue Oct 24 01:02:41 EAT 2017
Errors in file /oracle/admin/1_pmon_27125.trc:
ORA-07445: exception encountered: core dump [kadfih()+33] [SIGSEGV] [Address not mapped to object] [0x91A1A1A2A000F] [] []
Tue Oct 24 01:02:43 EAT 2017
Errors in file /oracle/admin/1_pmon_27125.trc:
ORA-00001: unique constraint (108.) violated
ORA-00001: unique constraint (108.) violated
ORA-00001: unique constraint (.) violated
ORA-00602: internal programming exception
ORA-00602: internal programming exception
ORA-00602: internal programming exception
ORA-07445: exception encountered: core dump [kadfih()+33] [SIGSEGV] [Address not mapped to object] [0x91A1A1A2A000F] [] []
Tue Oct 24 01:07:10 EAT 2017
Errors in file /oracle/admin/1_ora_16532.trc:
ORA-00600: 内部错误代码, 参数: [kghfrmrg:prv], [0xC00000073B406C28], [], [], [], [], [], []
Tue Oct 24 01:08:15 EAT 2017
Errors in file /oracle/admin/1_ora_16532.trc:
ORA-00600: 内部错误代码, 参数: [KGHFRE3], [0xC0000007433BACB0], [], [], [], [], [], []
Tue Oct 24 01:10:13 EAT 2017
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Error 22813 occured while spilling buffered messages
Tue Oct 24 01:10:18 EAT 2017
Errors in file /oracle/admin/1_q003_26244.trc:
ORA-00600: internal error code, arguments: [kpotcprc: uga depth exceeded], [16], [], [], [], [], [], []
Error 600 occured while spilling buffered messages
Tue Oct 24 01:10:20 EAT 2017
Errors in file /oracle/admin/1_q003_26244.trc:
ORA-00600: internal error code, arguments: [kpotcprc: uga depth exceeded], [16], [], [], [], [], [], []
Error 600 occured while spilling buffered messages
Tue Oct 24 01:10:23 EAT 2017
Errors in file /oracle/admin/1_q003_26244.trc:
ORA-00600: internal error code, arguments: [kpotcprc: uga depth exceeded], [16], [], [], [], [], [], []
…………………………………………………………………………………………………………………………
Tue Oct 24 15:00:26 EAT 2017
Errors in file /oracle/admin/1_q007_20218.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:26 EAT 2017
Errors in file /oracle/admin/1_q005_20204.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:27 EAT 2017
Errors in file /oracle/admin/1_q000_19435.trc:
ORA-07445: exception encountered: core dump [kocgpn2()+224] [SIGSEGV] [Address not mapped to object] [0x600000002] [] []
Tue Oct 24 15:00:28 EAT 2017
Errors in file /oracle/admin/1_q004_20225.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:28 EAT 2017
Errors in file /oracle/admin/1_q007_20218.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:29 EAT 2017
Errors in file /oracle/admin/1_q005_20234.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:29 EAT 2017
Errors in file /oracle/admin/1_q004_20225.trc:
ORA-00600: internal error code, arguments: [kgqbt_search_block198], [], [], [], [], [], [], []
Tue Oct 24 15:00:30 EAT 2017
Errors in file /oracle/admin/1_q003_19467.trc:
ORA-07445: exception encountered: core dump [kocgpn2()+224] [SIGSEGV] [Address not mapped to object] [0x600000002] [] []
初判应该是 stream 引起的。节点二也有相关 stream 的 cdmp 文件产生
Tue Oct 24 04:56:50 EAT 2017
Trace dumping is performing id=[cdmp_20171024015310]
Streams process APPLY_xxx altered (1) on instance 1
Tue Oct 24 05:11:34 EAT 2017
Trace dumping is performing id=[cdmp_20171024015317]
Streams process APPLY_xxx altered (1) on instance 1
Streams process APPLY_xxx altered (1) on instance 1
Tue Oct 24 05:26:18 EAT 2017
Trace dumping is performing id=[cdmp_20171024015321]
随即给厂家人员打了电话，让他们看看 stream 是否正常，反应状态异常。kill 其进程 p000、p001，立马就停止 apply 进程否则报错！！！
SQL> show user
USER is “STRMADMIN”
SQL> execute dbms_apply_adm.stop_apply (apply_name => ‘apply_esshlj’);
PL/SQL procedure successfully completed.
SQL> select apply_name,queue_name,status from dba_apply;
APPLY_NAME QUEUE_NAME STATUS
—————————— —————————— ——–
APPLY_ESSHLJ ESSHLJ_QUEUE DISABLED ###这会儿状态为 DISABLE### 启动后状态为 ENABLE。
随即又清理了一下缓存，该在 strmadmin 下执行
declare
options dbms_aqadm.aq$_purge_options_t;
begin
options.delivery_mode := dbms_aqadm.buffered;
dbms_aqadm.purge_queue_table(‘ESSHLJ_QUEUE_TABLE’, null, options);
end;
/
报错了
ERROR at line 1:
ORA-03113: end-of-file on communication channel
1 节点 alert 的 trc 文件一直产生，一秒钟可生成 5 个左右文件，一个 2M。oracle 目录只有 20G。编写脚本自动删除 trc 文件。
1，尝试了 flush buffer_cache；
2，尝试了 flush share_pool；
因为该报错的只是节点一，随即打算将 stream 切换至节点二，观察是否报错依旧，在目标端中心库上面执行了如下命令；
exec DBMS_AQADM.ALTER_QUEUE_TABLE@esshlj(queue_table => ‘ESSHLJ_QUEUE_TABLE’, primary_instance => 2, secondary_instance => 1);
观察 p000 和 p001 进程在 1 节点已经不在了。2 节点 stream 状态正常，ORA-600 报错没了，但是 ORA-7445 报错依旧。因为报错中一直有小工进程 q00 这样的进程，暂时修改 aq_tm_processes 参数为 0，看看报错还有没有。
SQL> !ps -ef |grep q00
oracle 8955 8883 1 15:22:05 pts/5 0:00 /sbin/sh -c ps -ef |grep q00
oracle 8957 8955 0 15:22:05 pts/5 0:00 grep q00
oracle 27097 1 0 14:37:32 ? 0:00 ora_q006_esshlj1
oracle 8820 1 51 15:21:52 ? 0:00 ora_q003_esshlj1
oracle 8018 1 0 15:21:41 ? 0:00 ora_q008_esshlj1
oracle 6752 1 0 15:21:12 ? 0:00 ora_q007_esshlj1
oracle 7641 1 0 15:21:27 ? 0:00 ora_q004_esshlj1
oracle 8863 1 1 15:21:58 ? 0:00 ora_q000_esshlj1
oracle 8839 1 0 15:21:55 ? 0:00 ora_q009_esshlj1
oracle 8931 1 4 15:22:01 ? 0:00 ora_q001_esshlj1
oracle 8954 1 6 15:22:04 ? 0:00 ora_q002_esshlj1
SQL> alter system set aq_tm_processes = 0; ##### 修改参数为 0#######
System altered.
SQL> !ps -ef |grep q00
oracle 11224 8883 0 15:23:08 pts/5 0:00 /sbin/sh -c ps -ef |grep q00
oracle 11226 11224 0 15:23:08 pts/5 0:00 grep q00
小工进程已经没有，但是报错依旧~ 头疼，在改回去吧。
SQL> alter system set aq_tm_processes = 1;
System altered.
SQL> !ps -ef |grep q00
oracle 12198 8883 0 15:23:35 pts/5 0:00 /sbin/sh -c ps -ef |grep q00
oracle 12203 12198 0 15:23:35 pts/5 0:00 grep q00
oracle 12135 1 20 15:23:35 ? 0:00 ora_q000_esshlj1
oracle 12199 1 3 15:23:35 ? 0:00 ora_q002_esshlj1
oracle 12167 1 7 15:23:35 ? 0:00 ora_q001_esshlj1
有同事大胆猜想既然不在 1 节点跑，是否可以将 1 节点的 aq_tm_processes 参数设置为 0，将 2 节点的 aq_tm_processes 参数设置为 1，并且指定 SID。
SQL> alter system set aq_tm_processes = 0 sid=’esshlj1′;
System altered.
随后观察 1 节点并没有产生烦人的 7445 告警
Tue Oct 24 15:36:08 EAT 2017
ALTER SYSTEM SET aq_tm_processes=0 SCOPE=BOTH SID=’esshlj1′;
Tue Oct 24 15:45:58 EAT 2017
Trace dumping is performing id=[cdmp_20171024152311]
Tue Oct 24 16:43:44 EAT 2017
Thread 1 advanced to log sequence 39430 (LGWR switch)
Current log# 1 seq# 39430 mem# 0: /vghlj/oradata/redo01.log
Current log# 1 seq# 39430 mem# 1: /vghlj/oradata/1_rd11.log
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