Oracle Database 12c discovery

  • Release version: Washingtondc
  • Updated February 1, 2024
  • 2 minutes to read
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    Summary of Oracle Database 12c discovery

    The ServiceNow Discovery application supports the discovery of Oracle Database 12c features, specifically pluggable databases (PDBs) and container databases (CDBs). To utilize these features effectively, customers may need to update the Discovery and Service Mapping Patterns application from the ServiceNow Store. PDBs are collections of database objects that function as separate databases within a CDB.

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    Key Features

    • Discovery of PDBs and CDBs, enabling comprehensive database management.
    • Requirements for user credentials and permissions configuration, including:
      • Applicative credentials for CDB/PDB discovery.
      • Windows and Unix credentials setup for database access.
      • Permissions to query specific Oracle database tables.
    • Data collection includes detailed information about PDB instances and CDB sizes, such as:
      • Instance names and versions.
      • Installation directories and Oracle home paths.
      • Database size metrics (allocated, used, and free space).

    Key Outcomes

    By configuring the necessary credentials and permissions, ServiceNow customers can successfully discover and manage Oracle Database 12c environments, including detailed insights into PDBs and CDBs. This enhanced visibility helps in optimizing database performance and resource allocation.

    The ServiceNow Discovery application can discover pluggable databases (PDBs) and container databases (CDBs), which are features of Oracle Database 12c. Discovering some of these resources requires updating the Discovery and Service Mapping Patterns application from the ServiceNow Store.

    A PDB is a portable collection of schemas, schema objects, and non-schema objects that appear to an Oracle Net client as a separate database. A collection of PDBs is called a container database (CDB).

    For more information about PDBs and CDBs, see What are CDBs, PDBs and Containers?

    Request apps on the Store

    Visit the ServiceNow Store website to view all the available apps and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the ServiceNow Store version history release notes.

    Prerequisites

    Set the user credentials and grant permissions:
    Note:
    Set applicative credentials at the CDB level to discover relationships for PDBs and the CDB size only. Alternatively, set applicative credentials at the CDB/PDB level to discover relationships for PDBs and the CDB/PDB size. If you do not set applicative credentials at the CDB level, no PDB attributes are discovered.

    Data collected during Discovery

    Discovery collects the following data:
    Table and field Description
    cmdb_ci_db_ora_pdb_instance: Relation Type : Managed By​​
    sid Name of the PDB instance​​
    name Name of the CI in CMDB. This is a combination of sid and the hostname​.
    version Version of the PDB as taken from the CDB instance​​
    edition Edition of the PDB as taken from the CDB instance​​
    install_directory Install directory of the PDB as taken from the CDB instance
    oracle_home​ Oracle home of the PDB as taken from the CDB instance
    cdb_name Name of the cdb sid that contains the PDB. This refers to the Oracle database instance configuration item (CI​)
    cmdb_ci_db_instance_size: Relation Type : Contained By​​
    sid Name of the Oracle database CDB/PDB instance​​
    name Name of the CI in CMDB. This is a combination of the sid and the hostname.
    db_size Total size allocated to the database instance
    used_size Size used by the database instance
    free_size Size of the free space on the database instance

    The following is a dependency view of the relationship between PDBs, CDBs, and containers.

    Dependency view of relationship between PDBs, CDBs, and containers