What is normal redundancy in ASM?
Normal redundancy. Oracle ASM provides two-way mirroring by default, which means that all files are mirrored so that there are two copies of every extent. A loss of one Oracle ASM disk is tolerated. You can optionally choose three-way or unprotected mirroring.
What files can be stored in the ASM Diskgroup?
You can store the following file types in ASM diskgroups:
- Datafiles.
- Control files.
- Online redo logs.
- Archive logs.
- Flashback logs.
- SPFILEs.
- RMAN backups.
- Temporary datafiles.
What does ASM stand for Oracle?
Automatic Storage Management
Automatic Storage Management (ASM), a feature of the Oracle Database, provides Oracle customers with simplified storage management that is consistent across all server and storage platforms.
What are the 3 physical components of the Oracle Database?
physical components of oracle database are control files,redo log files and datafiles.
What is striping and mirroring in ASM?
Striping spreads each file extent evenly across all disks in the assigned disk group. ASM also provides automatic mirroring of ASM files and allows the mirroring level to be specified by group. This mirroring occurs at the extent level.
What are the advantages of ASM?
ASM provides the following benefits: Striping—ASM spreads data evenly across all disks in a disk group to optimize performance and utilization. This even distribution of database files eliminates the need for regular monitoring and I/O performance tuning.
Is ASM a database?
Automatic Storage Management (ASM) is an integrated, high-performance database file system and disk manager. ASM is based on the principle that the database should manage storage instead of requiring an administrator to do it.
What is the benefit of Oracle ASM?
How does a database communicate with ASM?
The database communicates with ASM instance using the ASMB (umblicus process) process. Once the database obtains the necessary extents from extent map, all database IO going forward is processed through by the database processes, bypassing ASM.
How many layers does Oracle database have?
2 layers
7. How many layers does the Oracle database have? the Oracle database have 2 layers.
What is the difference between logical and physical storage in Oracle database?
Oracle database architecture depends upon two types of storage: physical and logical. Physical (disk) storage contains all the files in the database. Logical storage structures, such as tablespaces, segments, extents, and blocks, appear on the disk but are not part of the dataset.
