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ONS(Oracle notification service)ONS--A publish and subscribe service for communicating Fast Application Notification (FAN) events. 主要用于中间件和数据库的相连.ps -ef |grep ons

crs_stat -t Name           Type           Target    State     Host        ------------------------------------------------------------             ora.orcl1.ons application    ONLINE    OFFLINE               crs_start ora.orcl1.ons
ONS log: $GRID_HOME/opmn/logs/ons.log.* ONS config: $GRID_HOME/opmn/conf/ons.configgrep port $GRID_HOME/opmn/conf/ons.configlocalport=6100          # line added by Agentremoteport=6200         # line added by Agentlsof | grep 6200 | grep LISTENnetstat -an | grep 6200 | grep LISTEN如果进程有守护进程,需要先kill 父进程srvctl status nodeappscrs_stat -lsonsctl
usage: onsctl [verbose] <command> [<options>]The verbose option enables debug tracing and logging (for the server start).Permitted <command>/<options> combinations are:command   options
-------   ---------
start                       - Start ons
shutdown                    - Shutdown ons
reload                      - Trigger ons to reread its configuration file
debug     [<attr>=<val> ..] - Display ons server debug information
set       [<attr>=<val> ..] - Set ons log parameters
query     [<attr>=<val>]    - Query ons log parameters
ping      [<max-retry>]     - Ping local ons
help                        - Print brief usage description (this)
usage     [<command>]       - Print detailed usage descriptionOracle中的kfed和kfodOracle 10g中增强的Merge相关资讯      Oracle基础 
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