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To identify the clustername in Oracle CRS use $CRS_HOME/bin/cemutlo –n or Use OCRDUMP which will create a text file called OCRDUMPFILE open that file and look for this entry #ocrdump -stdout -keyname SYSTEM | grep -A 1 clustername | grep ORATEXT | awk ‘{print $3}’ or In the script $ORA_CRS_HOME/install/rootconfig: ORA_CRS_HOME=/oracle/product/CRS CRS_ORACLE_OWNER = Oracle […] Finding the CRS resource last modified or started will be very clumpsy when you look at crsd.log or any other logs. For that use -v flag in crsctl status resource command where you can find some important details like last server , last changed, last restart, internal status etc. For example:- [grid@node1 ~]$ crsctl status […] Introduction to server pool, (the real meaning of ‘g’ in the oracle’s advertisement since 10g) Very long post, take free time to read and to get a clear understanding….. Grid computing is a concept within Oracle database which has been there since 10g. The basic meaning of grid computing is to divide the hard […] As you aware spfile located in asm disks only starting 11gR2 in cluster environment. When CRSD need to start the various resources of the node or updates it changes in OCR. the location of spfile also should known to crsd. Here the gpnp profile comes into handy. (read more here for gpnp) The order […] Cluster integrity and cluster membership will be governed by occsd (oracle cluster synchronization daemon) monitors the nodes using 2 communication channels: – Private Interconnect aka Network Heartbeat – Voting Disk based communication aka Disk Heartbeat Network heartbeat:- Each node in the cluster is “pinged” every second Nodes must respond in css_misscount time (defaults to […] Hello, A long notes (confusing) on listeners in 11gR2 RAC. You all aware of we have two listeners running in database servers in Grid Infrastructure (Aka RAC) namely scan listeners and node listeners. How does they work? The SCAN works by being able to resolve to multiple IP addresses reflecting multiple listeners in the cluster […] Hello All, We all build RAC infrastructure and we have seen many cases that environment is not stable after live or when start using it. The reasons may be many, but due to vast technologies involvement in high availability concepts we do not know or we ignore many aspects while doing environment testing. It is […] Want to know new features in 12c, 18c, 19c, 20c ??? Follow this More than 100+ features listed here : http://db.geeksinsight.com/category/12c-database/ More than 50+ features listed here: http://db.geeksinsight.com/category/18c-database/ More than 40 features listed here: http://db.geeksinsight.com/category/19c-database/ Upcoming 20c features : http://db.geeksinsight.com/category/20c-database/ […] All, Please find the structured 11gR2 GI Clusterware log locations and its relevancy. Directory structured (Source: Oracle Documentation) Log Locations […]
This is about to understand the startup sequence of Grid Infrastructure daemons and its resources in 11gR2 RAC.
In 11g RAC aka Grid Infrastructure we all know there are additional background daemons and agents, and the Oracle documentation is not so clear nor the other blog.
For example:- I have found below […] |
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