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OPMN consists of two main components (Oracle Process Manager) and (Oracle Notification Server). Oracle Process Manager is responsible for 1) starting 2) stopping 3) restarting 4) monitoring the services it manages (this includes death detection and automatic restart of the process) Oracle Notification Server is the transport mechanism for failure, recovery, startup, and other related notifications between components in AS. Single configuration file(opmn.xml) is used OPMN to manage the services. OPMN Configuration File : $ORA_CONFIG_HOME/10.1.3/opmn/conf/opmn.xml Services managed by opmn are (grep process-type opmn.xml) 1) HTTP_Server 2) oacore 3) forms 4) oafm OPMN detects the death and restarts the process it manages. $LOG_HOME/ora/10.1.3/opmn/opmn.log has the information related to the deth detection and restart. To start and stop OPMN Use : adopmnctl.sh Refer to : REF:

注意DB端也有个opmn, 不要弄混了.

$ORACLE_HOME/opmn/conf/opmn.xml http://docs.oracle.com/cd/B14099_19/core.1012/b13996/intro.htm#i1017874

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