Data Collection Scenarios

By default, a data collector harvests metrics data, such as availability, configuration, and performance from all the entities that are managed and monitored by an existing on-premises Oracle Enterprise Manager Cloud Control. However, you can also collect data from selected entities defined in an on-premises Enterprise Manager Cloud Control. This helps you view data from only the entities that you want to monitor, which lets you troubleshoot problems faster.

Collect Data for All Entities

If you want to collect metrics from all entities that are monitored by an existing on-premises Oracle Enterprise Manager Cloud Control:

Ensure that you adhere to the General Guidelines and meet the Generic Prerequisites for Deploying Oracle Management Cloud Agents and Port Requirements.
Install the Oracle Management Cloud agents in the following order:

What Data Is Collected?

Scenario 1: If you’re an existing customer and have purchased standalone Oracle Management Cloud services (such as Oracle Infrastructure Monitoring, Oracle IT Analytics, and so on), the data collector will harvest:

All entity data; consists of entity information, entity properties, and associations.
All metrics for all entities; consists of all availability, configuration, and performance metrics and includes historical and current data after the entity has been discovered.

Scenario 2: If you’re a new customer and have purchased Oracle Management Cloud licensed editions (such as Standard Edition or Enterprise Edition):

Have purchased Oracle Management Cloud Standard Edition:
- All entity data
- Current metrics (consists of current availability, configuration, and performance metrics after the entity is enabled or licensed; no history is collected.) only for enabled entities ( entities that have been enabled for IT Analytics.)
Have purchased Oracle Management Cloud Enterprise Edition:
- All entity data
- All data only for enabled entities

Collect Data for Selected Entities

If you do not add the entities (host, agent, listener, database machine, and so on ) to the omcgroup, you cannot enable IT Analytics.

The process of collecting metrics data from selected entities is:

Create a dynamic group (see Create a Dynamic Group in Your On-Premises Enterprise Manager) called omcgroup in your on-premises Enterprise Manager Cloud Control that will contain only those member entities whose data you want to collect and upload. The Enterprise Manager Agent must also be part of the omcgroup.

If you had not created the omcgroup before the data collector was deployed, you can create it after deployment and the entities in the newly created omcgroup will be included in the next data collection. You do not have to restart the data collector.

A member entity can be a single entity or a group that contains nested entities and groups. Oracle Management Cloud supports collecting and uploading data from the direct members of omcgroup and nested members.

Note:

All the entities on which you want to enable Oracle IT Analytics should exist as members of omcgroup.
Ensure that you adhere to the General Guidelines and meet the Generic Prerequisites for Deploying Oracle Management Cloud Agents and Port Requirements.
Install the Oracle Management Cloud agents in the following order:

What Data Is Collected?

Depending on the type of the Oracle Management Cloud offerings that you've subscribed to, selective data collection varies.

Scenario 1: If you’re a new customer and have purchased Oracle Management Cloud licensed editions (such as Standard Edition or Enterprise Edition), even if the omcgroup has been created, the metrics will not be loaded until you enable Enterprise Edition (EE) on the entities. However, all entities will be added whether you create a group or not.

Status of `omcgroup`	Standard Edition (SE) Enabled	Enterprise Edition (EE) Enabled
`omcgroup` defined	Entity data for entities in `omcgroup` collected Current data only for SE enabled entities	Entity data for entities in `omcgroup` collected All data for EE enabled entities
`omcgroup` deleted after initial creation	Entity data collection changed from `omcgroup` to all entities No change in current metrics collection (defined by SE enabled entities)	Entity data collection changed from `omcgroup` to all entities No change in all metrics collection (defined by EE enabled entities)
`omcgroup` created later	Entity data updates changed from all entities to `omcgroup` only No change in current metrics collection (defined by SE enabled entities)	Entity data updates changed from all entities to `omcgroup` only No change in all metrics collection (defined by EE enabled entities)

Scenario 2: If you’re an existing customer and have purchased standalone Oracle Management Cloud services (such as Oracle Infrastructure Monitoring, Oracle IT Analytics, and so on), the data collector will harvest all entities if omcgroup is not created. If you create an omcgroup later, then it will harvest just the group, but the entities would have already been harvested and added, and metrics loaded.

Status of `omcgroup`	Data Collection Use case
`omcgroup` defined	Entity data for entities in `omcgroup` All metrics for entities in `omcgroup`
`omcgroup` deleted after initial creation	Entity data collection changed from `omcgroup` only to all entities All metrics collection changed from `omcgroup` only to all entities
`omcgroup` created later	Entity data updates changed from all entities to `omcgroup` only All metrics collection changed from all entities to `omcgroup` only