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12c ASM: The New ASM Frontier






When Automatic Storage Management (ASM) was introduced in 10gR1 and ASM was designed as a purpose-built host based volume management and file system that is integrated with the Oracle database. It is built on stripping and mirroring methodology (SAME) and providing the ability of rebalancing the file layout online, whenever the physical storage configuration changes. ASM is built on the Oracle instance architecture. From the users view, ASM exposes Disk Groups. These Disk Groups consists of ASM disks and files that are stripped across all the disks in a Disk Group. The Disk Groups are global in nature and the database instances running individually or in clusters have shared access to the Disk Groups and the files within them. ASM instances that access the same set of storage and under the realm of single CSS domain, to form an ASM cluster. With the advent of 11gR2, ASM become not only a significant part of the Oracle Clusterware stack, but is also a core component of engineered systems such as Exadata and ODA. Oracle 12c was announced in 2013, and along with this 12c release, came significant changes for ASM.

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Charles Kim

Charles Kim

President and Founder, Viscosity

Charles Kim is an Oracle ACE Director, Oracle Certified DBA, a Certified RAC Expert and Certified Exadata Implementation Specialist. Charles is also a VMware vExpert and a VMware Certified Professional. Charles specializes in RAC, Exadata, Virtualization and authored 8 books.

Charles holds certifications in Oracle, VMware, Red Hat Linux, and Microsoft, and has over 25 years of Oracle experience on mission and business critical databases. Charles presents regularly at local, regional, national, and international Oracle conferences including IOUG Collaborate, VMware World,  and Oracle OpenWorld on topics of RAC, ASM, Linux Best Practices, Data Guard Best Practices, VMware virtualization, Oracle VMware virtualization, and 7×24 High Availability Considerations.

Nitin Vengurlekar

Nitin Vengurlekar

Chief Technology Officer, Viscosity

Nitin Vengurlekar is the co-founder and CTO of Viscosity North America. At Viscosity, Nitin is responsible for Service delivery, Partner relationship and end-2-end solution architecture. Nitin’s main emphasis has been on virtualization, Oracle Engineered Systems, Hyper-Converged Systems, and Public/Private Database Cloud implementations.

Nitin is a well-known Oracle technologist and speaker in the areas of Oracle Storage, high availability, Oracle RAC, and private database cloud. He is the author of Database Cloud Storage, Oracle Automatic Storage Management, and the Data Guard Handbook. He has also written many papers on storage, database internals, database tuning, and served as a contributor to Oracle documentation as well as Oracle education material.

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