Oracle RAC Questions and Answers

29. Give some example of storage solutions that support cluster storage?
 
  • Automatic Storage Management (ASM)
  • Raw disk devices
  • Network File System (NFS) and
  • Oracle Cluster File Systems (OCFS2 and OCFS) support cluster storage.
 
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30. How can you connect to a specific node in a RAC environment?
  You can use the tnsnames.ora configuration file to ensure that you have the INSTANCE_NAME parameter specified in it.
 
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31. List the components of Oracle Clusterware?
  The components of Oracle Clusterware are given as follows:
  • Oracle Process Monitor Daemon
  • RACH Process
  • Oracle Notification Service
  • Event Manager
  • Cluster Ready Service (CRS)
  • Cluster Synchronization Services (CSS)
 
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32. What is the advantage of using ASM?
 
  • Two main advantages of using ASM are performance benefits and manageability.
  • I/O operations in ASM are managed directly by Oracle Kernel bypassing operating system layer; therefore, it provides better performance for I/O operations.
  • ASM storage is referred to as disk group, which is a set of multiple disks. The system does not have to deal with individual disks; therefore, it is easier to manager ASM storage.
 
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