Oracle中的ONS

Oracle中的ONS

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.config

grep port $GRID_HOME/opmn/conf/ons.config

localport=6100          # line added by Agent

remoteport=6200         # line added by Agent

lsof | grep 6200 | grep LISTEN

netstat -an | grep 6200 | grep LISTEN

如果进程有守护进程，需要先kill 父进程

srvctl status nodeapps

crs_stat -ls

onsctl

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 description