What is grid and ASM?
The Oracle Grid Infrastructure for a standalone server is the Oracle software that provides system support for an Oracle database including volume management, file system, and automatic restart capabilities. Oracle Grid Infrastructure for a standalone server is the software that includes Oracle Restart and Oracle ASM.
Does Oracle RAC shared storage?
The Oracle RAC binaries can be stored on local storage or on shared storage, based on your high availability requirements. Note: Symantec and Oracle recommend that you install the Oracle Clusterware and Oracle database binaries local to each node in the cluster.
How does ASM instance communicate with database instance?
Any database instance that is using an ASM disk group will contain a background process called OSMB. The OSMB process is responsible for communicating with the ASM instance. The RBAL background process within a database instance, called RBAL just like in the ASM Instance, performs a global open on ASM disks.
What is difference between ASM and file system in Oracle?
Use ASM for RAC: ASM provides a cluster file system manager. Use filesystems if you have disk-level mirroring and striping: Many disk arrays devices take care of striping and mirroring at the hardware level on your behalf.
What is the difference between ASM and RAC?
Like iPhone is a name of mobile developed by apple. Basically ASM comes with grid software. When you install grid, you can use ASM as well. RAC: Its a multi-node, multi-instance but single database technology that allows you to have multiple database instance so you can balance the load.
What is Oracle ASM?
ASM greatly simplifies the storage complexities often associated with an Oracle database while increasing availability and performance of the database.
Is Oracle RAC a high availability solution?
RAC is a high availability solution, but care should be taken when deciding to implement RAC . Oracle’s original Grid vision represented a pool of database servers, storage and networks in an inter-related resource platform. Effective Management of workload within the grid database computing arena was a key feature.
What are Oracle Real Application Clusters (RAC)?
Answer: To start with, Oracle Real Application Clusters (RAC) are a database system involving a configuration of multiple hosts or servers joined together with clustering software and accessing the shared disk storage structures.