Re: 10g Clusterware (Oracle CRS) documentation ?
- From: Dimitar Radoulov <cichomitiko@xxxxxxxxx>
- To: kutrovsky.oracle@xxxxxxxxx
- Date: Thu, 7 Apr 2005 00:11:28 +0200
MetaLink Note:259301.1
CRS and 10g Real Application Clusters
####################################################################
CRS DAEMON FUNCTIONALITY
------------------------
Here is a short description of each of the CRS daemon processes:
CRSD:
- Engine for HA operation
- Manages 'application resources'
- Starts, stops, and fails 'application resources' over
- Spawns separate 'actions' to start/stop/check application resources
- Maintains configuration profiles in the OCR (Oracle Configuration
Repository)
- Stores current known state in the OCR.
- Runs as root
- Is restarted automatically on failure
OCSSD:
- OCSSD is part of RAC and Single Instance with ASM
- Provides access to node membership
- Provides group services
- Provides basic cluster locking
- Integrates with existing vendor clusteware, when present
- Can also runs without integration to vendor clustware
- Runs as Oracle.
- Failure exit causes machine reboot.
--- This is a feature to prevent data corruption in event of a split brain.
EVMD:
- Generates events when things happen
- Spawns a permanent child evmlogger
- Evmlogger, on demand, spawns children
- Scans callout directory and invokes callouts.
- Runs as Oracle.
- Restarted automatically on failure
####################################################################
HTH
Dimitar
----- Original Message -----
From: "Christo Kutrovsky" <kutrovsky.oracle@xxxxxxxxx>
To: "oracle-l" <oracle-l@xxxxxxxxxxxxx>
Sent: Wednesday, April 06, 2005 9:34 PM
Subject: 10g Clusterware (Oracle CRS) documentation ?
> Hello All,
>
> I am having really hard time finding information about the 10g
> clusterware. I keep seeing references here and there to obscure
> executables in /app/crs/bin, but no other information whatsoever.
>
> Anyone having any aditional sources of information about Oracle 10g
> cluster ready services (clusterware) ? Especially all executables in
> /app/crs/bin ?
>
> --
> Christo Kutrovsky
> Database/System Administrator
> The Pythian Group
> --
> //www.freelists.org/webpage/oracle-l
--
//www.freelists.org/webpage/oracle-l
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