Example Configuration

To better understand the number of cores available for zones on certain types of Database Domains, consider the example configuration as described in Example Configuration, where:

• Your Oracle SuperCluster M6-32 consists of one compute server with two fully-populated DCUs.

• The R1_1 PDomain configuration is set up on the compute server (see Four Fully-Populated DCUs (R1_1 PDomain Configuration) for more information).

• The E4-4 LDom configuration (four LDoms) is set up on the R1_1 PDomain configuration (see E4-4 LDom Configuration for more information).

• The following LDom types are assigned to each LDom in the E4-4 LDom configuration:

  • LDom 1: Database Domain (without zones)

  • LDom 2: Solaris 10 Application Domain

  • LDom 3: Solaris 11 Application Domain

  • LDom 4: Database Domain with zones, with four zones

For the purposes of this exercise, assume the following:

• No zones will be set up on LDom 1 (the second Database Domain) in both PDomains.

• Four zones will be set up on LDom 4 (the first Database Domain) in both PDomains.

Using the information provided in the following sections:

• Four Fully-Populated DCUs (R1_1 PDomain Configuration)

• E4-4 LDom Configuration

• Cores Available for Domains and Zones

You can determine the following information about the two Database Domains on each PDomain:

• 120 total cores are available for LDom 1 (the first Database Domain).

• 24 total cores are available for LDom 4 (the second Database Domain).

The following sections describe how cores could be allocated in both of these Database Domains:

• LDom 4 (Second Database Domain)

• LDom 1 (First Database Domain)

LDom 1 (First Database Domain)

This Database Domain has 120 cores available to it, but this Database Domain will not contain any zones. The Database Domain is still considered the global zone in this situation, but because there are no zones in this LDom, all 120 cores are available for this Database Domain, so you could allocate all 120 cores to this Database Domain on both PDomains.

LDom 4 (Second Database Domain)

This Database Domain will contain four zones, which means that:

• The Database Domain will be the global zone.

• The four zones within the Database Domain will be nonglobal zones.

Because this Database Domain on each PDomain will contain four zones, and it has 24 cores available to it, it would appear at first that you could create four equal-sized zones with regards to the number of cores, where each zone would have six cores (24 / 4 = 6).

However, based on the information provided in Cores Available for Domains and Zones, a certain number of cores will be set aside for the global zone. For this specific domain, four cores will be set aside for the global zone, so you actually have 20 cores available for the four zones in this Database Domain. So, for the zones in this Database Domain, you could allocate five cores for each of the four zones to use all 20 cores available for zones in this Database Domain (20 / 4 = 5).