Wednesday, 20 December 2017

Oracle DBCS Storage Volumes and File System Layout

Oracle uses simple and most efficient Storage Volumes and File System Layout in Oracle Database Cloud Service (DBCS) for the ease of use and management.

Let’s take a look at the Oracle Database Cloud Services Storage Volume and File System Layout in more details.

When you create a database deployment, Oracle Database Cloud Services (DBCS) creates the following Storage Layout and File Systems for you.

Storage Volumes

Storage Volume
Description
bits
60 GB volume completely allocated to /u01 on the virtual machine.
boot
32 GB volume allocated to the following file system mounts on the virtual machine:
  • / (root)
  • /boot
  • swap space

data
GB size equal to the value provided in the Usable Data Storage field during the database deployment creation process, with a minimum of 15 GB. This volume is completely allocated to /u02 on the virtual machine.
fra
GB size depends on the choice of Backup Destination during the database deployment creation process:


  • Both Cloud Storage and Local Storage: GB size equal to 1.7 times the size of the data volume.
  • Cloud Storage Only or None: GB size equal to 0.1 times the size of the data volume, with a minimum of 7 GB

This volume is completely allocated to /u03 on the virtual machine.
redo
10 GB volume completely allocated to /u04 on the virtual machine.

Storage Volumes of an Oracle Database Deployment



File System Layout

File System mount point
Description
swap
Swap space: 4 GB allocated from the boot Compute Cloud storage volume.
/ (root)
Operating system files: 25.5 GB allocated from the boot Compute Cloud storage volume.
/boot
Operating system kernel: 500 MB allocated from the boot Compute Cloud storage volume.
/u01
Oracle product software: the entire bits Compute Cloud storage volume.
/u02
Oracle Database data storage: the entire data Compute Cloud storage volume.
/u03
Database backup storage: the entire fra Compute Cloud storage volume.
/u04
Database redo logs: the entire redo Compute Cloud storage volume.


File System Layout of an Oracle Database Deployment




Conclusion

In this article we have learned about Oracle Database Cloud Services Storage Volumes and File System Layout. When you create a database deployment, Oracle Database Cloud Services (DBCS) creates the Storage Layout and File Systems for you.

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