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1. how to start oms emctl start oms - it start HTTP_SERVER (OHS) - start node manager if not running - if admin server is configured , if configured start admin server - start managed server ( EMGC_OMSn) 2 . how to check oms status emctl status oms emctl status oms -details (it ask sysman password) 3. How to stop OMS emctl stop oms - it stop webtier ( http_Server and opmn) - it stop EM managed server - it won't stop node manager or admin server emctl stop oms -all - it stops everything including node manager and admin server emctl stop oms -force emctl stop oms -all - force - above commands kills the process forcefully EM Managed Server log file --> EMGC_OMS1.out, EMGC_OMS1.log The DBSNMP account is used by OEM via the Management Agent for instance/node target discovery and connectivity by the OMS to the target instance/node. So account should be unlock,

CVU includes two scripts: runcluvfy.sh (runcluvfy.bat on Windows), which you use before installing/upgrading Oracle software, and cluvfy (cluvfy.bat on Windows), located in the Grid_home/bin directory. The runcluvfy.sh script contains temporary variable definitions which enable it to run before you install Oracle Grid Infrastructure or Oracle Database. After you install Oracle Grid Infrastructure, use the cluvfy command to check prerequisites and perform other system readiness checks. Storage verifications cluvfy comp cfs cluvfy comp space cluvfy comp ssa cluvfy stage [-pre | -post] acfscfg Network verification cluvfy stage -post hwos Connectivity verifications cluvfy comp nodecon cluvfy comp nodereach Cluster Time Synchronization Services verification cluvfy comp clocksync User and Permissions verification cluvfy comp admprv Node comparison and verification cluvfy comp peer Installation verifica...

The use of Grid Infrastructure is not limited to clusters—it also provides high availability to single-instance Oracle deployments, as well. The standalone Grid Infrastructure installation was previously called Single Instance High Availability (SIHA), but it was renamed to Oracle Restart in the public release. With Oracle Restart, you shouldn’t need startup scripts to start and stop databases and services because oracle restart will take care. The added benefit of using Oracle Restart (Grid Infrastructure) is the usage of Automatic Storage Management (ASM) is included.   Oracle Restart is managed by CRSCTL utility and it uses Oracle High Availability Services to start and stop the components managed by Oracle Restart. Restart controls the following resources. • Database • Listener • ASM • ASM Disk Group • Oracle Notification Services Another benefit: It Doesn’t require the definition of an OCR or ...