Oracle Clusterware is the cross-platform cluster software required to run the Real Application Clusters (RAC) option for Oracle Database . It provides the basic clustering services at the operating-system level that enable Oracle Database software to run in clustering mode. In earlier versions of Oracle (release 9i and earlier), RAC required a vendor-supplied clusterware like Sun Cluster or Veritas Cluster Server (except when running on Linux or on Microsoft Windows ).
26-581: [REDACTED] Look up CRS in Wiktionary, the free dictionary. CRS may refer to: Organisations [ edit ] Government related [ edit ] Career Retention Specialist , a Marine responsible for enlisted retention in U.S. Marine Corps units China Reconstruction Society, also known as the Blue Shirts Society , a Fascist clique and secret police or para-military force in
52-613: A French-based creole language of the Seychelles Colorado Revised Statutes , the legal code of Colorado Cosmic Ray Subsystem , a spacecraft instrument on the Voyager probe that helped detect the interstellar medium Consumer Recreation Services, a fictional company which features in the 1997 film The Game See also [ edit ] .crs (disambiguation) CRS-1 (disambiguation) Distinguish from [ edit ] seeress ,
78-465: A French-based creole language of the Seychelles Colorado Revised Statutes , the legal code of Colorado Cosmic Ray Subsystem , a spacecraft instrument on the Voyager probe that helped detect the interstellar medium Consumer Recreation Services, a fictional company which features in the 1997 film The Game See also [ edit ] .crs (disambiguation) CRS-1 (disambiguation) Distinguish from [ edit ] seeress ,
104-496: A Somascha ), a charitable religious congregation Science and technology [ edit ] Medicine and biology [ edit ] Cambridge Reference Sequence , used in mitochondrial DNA testing Caudal regression syndrome , a rare congenital disorder Chinese restaurant syndrome , purportedly caused by the flavor enhancer glutamate Chronic radiation syndrome , resulting from prolonged exposures to radiation Chronic rhinosinusitis Congenital rubella syndrome ,
130-502: A UK-based organisation to promote classic and progressive rock music Co-operative Retail Services , a former co-operative society in the United Kingdom Creation Research Society , a Christian research group which engages in creation science Croatian Register of Shipping , an independent classification society working in the marine market Somaschi Fathers ( Ordo Clericorum Regularium
156-485: A computerised system used for travel bookings Coordinate reference system , used to locate geographical entities Other uses [ edit ] Camp Rising Sun (New York) , an international leadership-program for youth development Child Rebel Soldier , a former hip-hop supergroup composed of Kanye West, Lupe Fiasco, and Pharrell Classroom response system , an interactive teaching tool using "clicker questions" Seychellois Creole (ISO 639-3 language code),
182-485: A computerised system used for travel bookings Coordinate reference system , used to locate geographical entities Other uses [ edit ] Camp Rising Sun (New York) , an international leadership-program for youth development Child Rebel Soldier , a former hip-hop supergroup composed of Kanye West, Lupe Fiasco, and Pharrell Classroom response system , an interactive teaching tool using "clicker questions" Seychellois Creole (ISO 639-3 language code),
208-536: A disease passed from mother to fetus Cutaneous radiation syndrome , a syndrome that results from acute radiation exposure to the skin Cytokine release syndrome , in immunology Cytoreductive surgery , in cancer treatment Computer science and engineering [ edit ] Canada Remote Systems , a now-defunct bulletin-board system based in Toronto Carrier Routing System ,
234-444: A female prophet Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title CRS . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=CRS&oldid=1258881729 " Category : Disambiguation pages Hidden categories: Short description
260-444: A female prophet Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title CRS . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=CRS&oldid=1258881729 " Category : Disambiguation pages Hidden categories: Short description
286-539: A former co-operative society in the United Kingdom Creation Research Society , a Christian research group which engages in creation science Croatian Register of Shipping , an independent classification society working in the marine market Somaschi Fathers ( Ordo Clericorum Regularium a Somascha ), a charitable religious congregation Science and technology [ edit ] Medicine and biology [ edit ] Cambridge Reference Sequence , used in mitochondrial DNA testing Caudal regression syndrome ,
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#1732766180336312-427: A large-scale core router Celestial Reference System(s), see Barycentric and geocentric celestial reference systems Cluster Ready Services, components of Oracle Clusterware for database support Cold rolled steel Commercial Resupply Services , a NASA contract to deliver supplies to space Common reference string model , in cryptography Computer reservations system (or Central Reservation System ),
338-509: A now-defunct bulletin-board system based in Toronto Carrier Routing System , a large-scale core router Celestial Reference System(s), see Barycentric and geocentric celestial reference systems Cluster Ready Services, components of Oracle Clusterware for database support Cold rolled steel Commercial Resupply Services , a NASA contract to deliver supplies to space Common reference string model , in cryptography Computer reservations system (or Central Reservation System ),
364-525: A permanent child process called "evmlogger" and generates events. The EVMd child process ‘evmlogger’ spawns new children processes on demand and scans the callout directory to invoke callouts. It will restart automatically on failures and death of the EVMd process does not halt the instance. EVMd runs as the "oracle" user. OPROCd provides the server fencing solution for the Oracle Clusterware. It
390-573: A rare congenital disorder Chinese restaurant syndrome , purportedly caused by the flavor enhancer glutamate Chronic radiation syndrome , resulting from prolonged exposures to radiation Chronic rhinosinusitis Congenital rubella syndrome , a disease passed from mother to fetus Cutaneous radiation syndrome , a syndrome that results from acute radiation exposure to the skin Cytokine release syndrome , in immunology Cytoreductive surgery , in cancer treatment Computer science and engineering [ edit ] Canada Remote Systems ,
416-412: Is a distributed group membership system that allows the applications to coordinate activities to achieve a common result. As such, it provides synchronization services between nodes, access to the node membership information, as well as enabling basic cluster services, including cluster group services and cluster locking. It can also run without integration with vendor clusterware. Failure of OCSSd causes
442-478: Is different from Wikidata All article disambiguation pages All disambiguation pages CRS [REDACTED] Look up CRS in Wiktionary, the free dictionary. CRS may refer to: Organisations [ edit ] Government related [ edit ] Career Retention Specialist , a Marine responsible for enlisted retention in U.S. Marine Corps units China Reconstruction Society, also known as
468-457: Is different from Wikidata All article disambiguation pages All disambiguation pages Oracle Clusterware Oracle Clusterware is the software which enables the nodes to communicate with each other, allowing them to form the cluster of nodes which behaves as a single logical server. Oracle Clusterware is run by Cluster Ready Services (CRS) consisting of two key components: Oracle Cluster Registry (OCR), which records and maintains
494-455: Is the process monitor for Oracle Clusterware and it uses the hang check timer or watchdog timer (depending on the implementation) for the cluster integrity. OPROCd is locked in the memory and runs as a real time process . This sleeps for a fixed time and runs as the "root" user. Failure of the OPROCd process causes the node to restart. OPROCd is so important that even it is being monitored by
520-561: The Blue Shirts Society , a Fascist clique and secret police or para-military force in the Republic of China between 1931 and 1938 Commission of Railway Safety , rail safety authority in India Common Reporting Standard , an OECD standard for exchange of information Community Relations Service , United States Department of Justice branch for CR and civil rights Compagnies Républicaines de Sécurité ,
546-658: The CRS daemon can cause node failure , which triggers automatic reboots of the nodes to avoid the corruption of data (due to the possible failure of communication between the nodes), also known as fencing . The CRS daemon runs as "root" ( super user ) on UNIX platforms and runs as a service on Windows platforms. The following functions are provided by the Oracle Cluster Ready Services daemon (CRSd): Oracle Cluster Synchronization Services daemon (OCSSd) provides basic ‘group services’ support. Group Services
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#1732766180336572-687: The French riot-control force Congressional Research Service , the public-policy arm of the United States Congress Compulsory Registration Scheme a Bureau of Indian Standards (BIS) Scheme NGO or commercial [ edit ] Catholic Relief Services , an American international humanitarian agency Center for Resource Solutions , a nonprofit public agency in the United States Classic Rock Society ,
598-422: The Republic of China between 1931 and 1938 Commission of Railway Safety , rail safety authority in India Common Reporting Standard , an OECD standard for exchange of information Community Relations Service , United States Department of Justice branch for CR and civil rights Compagnies Républicaines de Sécurité , the French riot-control force Congressional Research Service , the public-policy arm of
624-440: The United States Congress Compulsory Registration Scheme a Bureau of Indian Standards (BIS) Scheme NGO or commercial [ edit ] Catholic Relief Services , an American international humanitarian agency Center for Resource Solutions , a nonprofit public agency in the United States Classic Rock Society , a UK-based organisation to promote classic and progressive rock music Co-operative Retail Services ,
650-488: The cluster and node membership information; voting disk , which polls for consistent heartbeat information from all the nodes when the cluster is running, and acts as a tiebreaker during communication failures. The CRS service has four components, each handling a variety of functions: Cluster Ready Services daemon (CRSd), Oracle Cluster Synchronization Service Daemon (OCSSd), Event Volume Manager Daemon (EVMd), and Oracle Process Clusterware Daemon (OPROCd). Failure or death of
676-714: The machine to reboot to avoid a split-brain situation. This is also required in a single instance configuration if Automatic Storage Management (ASM) is used. ASM was a new feature in Oracle 10g . OCSSd runs as the "oracle" user. The following functions are provided by the Oracle Cluster Synchronization Services daemon (OCSSd): The third component in OCS is the Event Volume Management Logger daemon (EVMd). EVMd spawns
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