DBNEST_ENABLE

2.101 DBNEST_ENABLE

DBNEST_ENABLE allows you to enable or disable dbNest.

Note:

This parameter is applicable only on Linux systems.

Property	Description
Parameter type	String
Syntax	`DBNEST_ENABLE = { NONE \| CDB_RESOURCE_PDB_ALL }`
Default value	`NONE`
Modifiable	No
Modifiable in a PDB	No
Basic	No
Oracle RAC	All instances should use the same value.

DbNest provides operating system resource isolation and management, file system isolation, and secure computing for PDBs. The infrastructure is implemented as a Linux-specific package that provides hierarchical containers, called nests. A CDB resides within a single parent nest, while PDBs reside within the individual child nests created within the parent. The isolation and resource management properties of a nest are separate. A full nest includes both isolation and resource management. Alternatively, you can configure a partial nest that includes only resource management.

You can set the following values for this parameter:

NONE: Disables dbNest. This is the default value.
CDB_RESOURCE_PDB_ALL: Enables a resource management-only nest for the CDB and a full nest for each PDB.

Note:

This parameter is available starting with Oracle Database 21c.