12c DG broker DMON自动重启过程分析

一、知识点
1.强烈建议大家管理dataguard使用broker。
2.broker的日志要知道在哪里，会看日志是学习的第一步。
3.体系结构需要看官方文档。

二、测试过程

1.查看DMON进程 <roidb02:orcldg:/u01/app/oracle/diag/rdbms/orcldg/orcldg/trace>$ps -ef|grep dmon oracle 16045 1 0 15:49 ? 00:00:00 ora_dmon_orcldg oracle 16873 15880 0 15:52 pts/0 00:00:00 grep --color=auto dmon 2.kill DMON进程 <roidb02:orcldg:/u01/app/oracle/diag/rdbms/orcldg/orcldg/trace>$kill 16045 <roidb02:orcldg:/u01/app/oracle/diag/rdbms/orcldg/orcldg/trace>$ 3.查看broker日志 <roidb02:orcldg:/u01/app/oracle/diag/rdbms/orcldg/orcldg/trace>$tail -f drc*.log 2017-12-18 15:49:36.224 SQL [ALTER SYSTEM REGISTER] Executed successfully 12/18/2017 15:49:36 Broker Configuration: "dg_config" Protection Mode: Maximum Performance Fast-Start Failover (FSFO): Disabled, flags=0x0, version=0 Primary Database: orcl (0x01010000) 12/18/2017 15:49:40 orcldg version check successfully completed Broker configuration file is current on orcldg, completing initialization Creating process RSM0 --正常状态 12/18/2017 15:53:13 RSM0 terminating since Data Guard Broker Monitor Process (DMON) is not running 12/18/2017 15:53:39 No DMON process running, NetSlave exiting... --进程被KILL的日志 12/18/2017 15:53:53 PMON Deregistering service orcldg_DGB with listener(s) 2017-12-18 15:53:54.951 PMON: >> Broker cleanup complete << 2017-12-18 15:53:54.951 Restart Data Guard Broker Process, DMON 2017-12-18 15:53:54.951 PMON: Creating Data Guard Broker Monitor Process (DMON) 2017-12-18 15:53:57.147 drcx: DMON is not yet available for PROBE. 2017-12-18 15:53:57.964 >> Starting Data Guard Broker bootstrap << --自动重启dmon 2017-12-18 15:53:57.964 Broker Configuration File Locations: 2017-12-18 15:53:57.964 dg_broker_config_file1 = "+DATADG/orcldg/dr1.dat" --配置文件路径 2017-12-18 15:53:57.964 dg_broker_config_file2 = "+DATADG/orcldg/dr2.dat" --配置文件路径 2017-12-18 15:53:57.964 DMON: Attach state object 2017-12-18 15:53:57.964 DMON: rfafoGetLocks reinitializing dubious PMYSHUT lock value block contents: sts=0, flags=0x0, spare1=0x0, spare2=0x0, cksm=0x0, rndm=0x0 2017-12-18 15:53:57.965 DMON: Broker state reconciled, version = 0, state = 00000000 2017-12-18 15:53:57.965 DMON: Broker State Initialized --初始化 2017-12-18 15:53:57.965 Version = 1 2017-12-18 15:53:57.965 State = 00000000 2017-12-18 15:53:57.965 DMON: Entered rfm_get_chief_lock() for CTL_BOOTSTRAP, reason 2 2017-12-18 15:53:57.965 7fffffff 0 DMON: Entered rfm_get_chief_lock() for CTL_BOOTSTRAP, reason 0 2017-12-18 15:53:58.980 7fffffff 0 DMON: start task execution: broker initialization 2017-12-18 15:53:58.980 DMON: Boot configuration (0.0.0), loading from "+DATADG/orcldg/dr2.dat" 2017-12-18 15:53:58.996 DMON Registering service orcldg_DGB with listener(s) 2017-12-18 15:53:58.996 DMON: Executing SQL [ALTER SYSTEM REGISTER] 2017-12-18 15:53:58.996 SQL [ALTER SYSTEM REGISTER] Executed successfully 12/18/2017 15:53:59 Broker Configuration: "dg_config" Protection Mode: Maximum Performance Fast-Start Failover (FSFO): Disabled, flags=0x0, version=0 Primary Database: orcl (0x01010000) 12/18/2017 15:54:02 orcldg version check successfully completed Broker configuration file is current on orcldg, completing initialization Creating process RSM0

整个进程自动重启的时间不超过1分钟，自动完成。