ASM Interview questions
1) What are the background processes in ASM Ans: RABL- Rebalancer: It opens all the device files as part of disk discovery and coordinates the ARB processes for rebalance activity. ARBx - Actual Rebalancer: They perform the actual rebalancing activities. The number of ARBx processes depends on the ASM_POWER_LIMIT init parameter. ASMB - ASM Bridge: This process is used to provide information to and from the Cluster Synchronization Service (CSS) used by ASM to manage the disk resources. It is also used to update statistics and provide a heartbeat mechanism. 2) What is the use of ASM (or) Why ASM preferred over filesystem? ANS: ASM provides striping and mirroring. 3) What are the init parameters related to ASM? ANS: INSTANCE_TYPE = ASM ASM_POWER_LIMIT = 11 ASM_DISKSTRING = '/dev/rdsk/*s2', '/dev/rdsk/c1*' ASM_DISKGROUPS = DG_DATA, DG_FRA 4) What is rebalancing (or) what is the use of ASM_POWER_LIMIT? ANS: ASM_POWER_LIMIT is dynamic parameter, which will be useful for re...