| Oracle® Database Reference 11g Release 2 (11.2) Part Number E25513-03  | 
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DBA_FEATURE_USAGE_STATISTICS displays information about database feature usage statistics.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
DBID | 
NUMBER | 
NOT NULL | 
Database identifier of the database being tracked | 
NAME | 
VARCHAR2(64) | 
NOT NULL | 
Name of the feature (see Table 4-1) | 
VERSION | 
VARCHAR2(17) | 
NOT NULL | 
Database version in which the feature was tracked | 
DETECTED_USAGES | 
NUMBER | 
NOT NULL | 
Number of times the system has detected usage for the feature | 
TOTAL_SAMPLES | 
NUMBER | 
NOT NULL | 
Number of times the system has woken up and checked for feature usage | 
CURRENTLY_USED | 
VARCHAR2(5) | 
Indicates whether usage was detected the last time the system checked (TRUE) or not (FALSE) | 
|
FIRST_USAGE_DATE | 
DATE | 
First sample time the system detected usage of the feature | |
LAST_USAGE_DATE | 
DATE | 
Last sample time the system detected usage of the feature | |
AUX_COUNT | 
NUMBER | 
This column stores feature-specific usage data in number format. | |
FEATURE_INFO | 
CLOB | 
This column stores feature-specific usage data in character format. | |
LAST_SAMPLE_DATE | 
DATE | 
Amount of time (in seconds) between the last two usage sample times | |
LAST_SAMPLE_PERIOD | 
NUMBER | 
Amount of time (in hours) between the last two usage sample times | |
SAMPLE_INTERVAL | 
NUMBER | 
Sample interval | |
DESCRIPTION | 
VARCHAR2(128) | 
Description of the feature and usage detection logic (see Table 4-1) | 
Table 4-1 DBA_FEATURE_USAGE_STATISTICS Statistics
| Name | Description | 
|---|---|
| 
 Logfile Multiplexing  | 
 Multiple members are used in a single log file group  | 
| 
 Bigfile Tablespace  | 
 Bigfile tablespace is being used  | 
| 
 Transportable Tablespace  | 
 Transportable tablespace is being used  | 
| 
 Read Only Tablespace  | 
 Read only tablespace is being used  | 
| 
 Deferred Open Read Only  | 
 Deferred open read only feature is enabled  | 
| 
 Active Data Guard - Real-Time Query on Physical Standby  | 
 Active Data Guard real-time query is enabled on a physical standby  | 
| 
 Backup Rollforward  | 
 Backup Rollforward strategy is being used to backup the database.  | 
| 
 Data Recovery Advisor  | 
 Data Recovery Advisor (DRA) is being used to repair the database.  | 
| 
 Resource Manager  | 
 Oracle Database Resource Manager is being used to manage database resources.  | 
| 
 Server Flash Cache  | 
 Database Smart Flash Cache is being used with this database.  | 
| 
 Server Parameter File  | 
 The server parameter file (SPFILE) was used to startup the database.  | 
| 
 Shared Server  | 
 The database is configured as Shared Server, where one server process can service multiple client programs.  | 
| 
 Spatial  | 
 There is at least one usage of the Oracle Spatial index metadata table.  | 
| 
 Locator  | 
 There is at least one usage of the Oracle Locator index metadata table.  | 
| 
 ADDM  | 
 ADDM has been used.  | 
| 
 SQL Access Advisor  | 
 SQL Access Advisor has been used.  | 
| 
 Undo Advisor  | 
 Undo Advisor has been used.  | 
| 
 SQL Tuning Advisor  | 
 SQL Tuning Advisor has been used.  | 
| 
 Segment Advisor  | 
 Segment Advisor has been used.  | 
| 
 SQL Workload Manager  | 
 SQL Workload Manager has been used.  | 
| 
 Tune MView  | 
 Tune MView has been used.  | 
| 
 SQL Performance Analyzer  | 
 SQL Performance Analyzer has been used.  | 
| 
 SQL Repair Advisor  | 
 SQL Repair Advisor has been used.  | 
| 
 Advanced Replication  | 
 Advanced Replication has been enabled.  | 
| 
 ASO native encryption and checksumming  | 
 ASO network native encryption and checksumming is being used.  | 
| 
 Audit Options  | 
 Audit options in use.  | 
| 
 Automatic Maintenance - Optimizer Statistics Gathering  | 
 Automatic initiation of Optimizer Statistics Collection  | 
| 
 Automatic Maintenance - Space Advisor  | 
 Automatic initiation of Space Advisor  | 
| 
 Automatic Maintenance - SQL Tuning Advisor  | 
 Automatic initiation of SQL Tuning Advisor  | 
| 
 Automatic Segment Space Management (system)  | 
 Extents of locally managed tablespaces are managed automatically by Oracle.  | 
| 
 Automatic Segment Space Management (user)  | 
 Extents of locally managed user tablespaces are managed automatically by Oracle.  | 
| 
 Automatic SQL Execution Memory  | 
 Sizing of work areas for all dedicated sessions (PGA) is automatic.  | 
| 
 Automatic Storage Management  | 
 Automatic Storage Management has been enabled  | 
| 
 Automatic Undo Management  | 
 Oracle automatically manages undo data using an UNDO tablespace.  | 
| 
 Automatic Workload Repository  | 
 A manual Automatic Workload Repository (AWR) snapshot was taken in the last sample period.  | 
| 
 AWR Baseline  | 
 At least one AWR Baseline has been created by the user  | 
| 
 AWR Baseline Template  | 
 At least one AWR Baseline Template has been created by the user  | 
| 
 AWR Report  | 
 At least one Workload Repository Report has been created by the user  | 
| 
 Backup Encryption  | 
 Encrypted backups are being used.  | 
| 
 Baseline Adaptive Thresholds  | 
 Adaptive Thresholds have been configured.  | 
| 
 Baseline Static Computations  | 
 Static baseline statistics have been computed.  | 
| 
 Change-Aware Incremental Backup  | 
 Track blocks that have changed in the database.  | 
| 
 Client Identifier  | 
 Application User Proxy Authentication: Client Identifier is used at this specific time.  | 
| 
 Clusterwide Global Transactions  | 
 Clusterwide Global Transactions is being used.  | 
| 
 Crossedition Triggers  | 
 Crossedition triggers is being used.  | 
| 
 CSSCAN  | 
 Oracle Database has been scanned at least once for character set:CSSCAN has been run at least once.  | 
| 
 Character Semantics  | 
 Character length semantics is used in Oracle Database  | 
| 
 Character Set  | 
 Character set is used in Oracle Database  | 
| 
 Data Guard  | 
 Data Guard, a set of services, is being used to create, maintain, manage, and monitor one or more standby databases.  | 
| 
 Data Mining  | 
 There exist Oracle Data Mining models in the database.  | 
| 
 Dynamic SGA  | 
 The Oracle SGA has been dynamically resized through an ALTER SYSTEM SET statement.  | 
| 
 Editions  | 
 Editions is being used.  | 
| 
 Editioning Views  | 
 Editioning views is being used.  | 
| 
 EM Database Control  | 
 EM Database Control Home Page has been visited at least once.  | 
| 
 EM Grid Control  | 
 EM Grid Control Database Home Page has been visited at least once.  | 
| 
 Diagnostic Pack  | 
 Diagnostic Pack related EM page has been visited at least once.  | 
| 
 Tuning Pack  | 
 Tuning Pack related EM page has been visited at least once.  | 
| 
 File Mapping  | 
 File Mapping, the mechanism that shows a complete mapping of a file to logical volumes and physical devices, is being used.  | 
| 
 Flashback Database  | 
 Flashback Database, a rewind button for the database, is enabled  | 
| 
 Flashback Data Archive  | 
 Flashback Data Archive, a historical repository of changes to data contained in a table, is used  | 
| 
 Internode Parallel Execution  | 
 Internode Parallel Execution is being used.  | 
| 
 Label Security  | 
 Oracle Label Security, that enables label-based access control Oracle applications, is being used.  | 
| 
 Oracle Database Vault  | 
 Oracle Database Vault is being used  | 
| 
 Locally Managed Tablespaces (system)  | 
 There exists tablespaces that are locally managed in the database.  | 
| 
 Locally Managed Tablespaces (user)  | 
 There exists user tablespaces that are locally managed in the database.  | 
| 
 Messaging Gateway  | 
 Messaging Gateway, that enables communication between non-Oracle messaging systems and Advanced Queuing (AQ), link configured.  | 
| 
 Very Large Memory  | 
 Very Large Memory is enabled.  | 
| 
 Automatic Memory Tuning  | 
 Automatic Memory Tuning is enabled.  | 
| 
 Automatic SGA Tuning  | 
 Automatic SGA Tuning is enabled.  | 
| 
 Encrypted Tablespaces  | 
 Encrypted Tablespaces is enabled.  | 
| 
 MTTR Advisor  | 
 Mean Time to Recover Advisor is enabled.  | 
| 
 Multiple Block Sizes  | 
 Multiple Block Sizes are being used with this database.  | 
| 
 OLAP - Analytic Workspaces  | 
 OLAP - the analytic workspaces stored in the database.  | 
| 
 OLAP - Cubes  | 
 OLAP - number of cubes in the OLAP catalog that are fully mapped and accessible by the OLAP API.  | 
| 
 Oracle Managed Files  | 
 Database files are being managed by Oracle.  | 
| 
 Oracle Secure Backup  | 
 Oracle Secure Backup is used for backups to tertiary storage.  | 
| 
 Parallel SQL DDL Execution  | 
 Parallel SQL DDL Execution is being used.  | 
| 
 Parallel SQL DML Execution  | 
 Parallel SQL DML Execution is being used.  | 
| 
 Parallel SQL Query Execution  | 
 Parallel SQL Query Execution is being used.  | 
| 
 Partitioning (system)  | 
 Oracle Partitioning option is being used - there is at least one partitioned object created.  | 
| 
 Partitioning (user)  | 
 Oracle Partitioning option is being used - there is at least one user partitioned object created.  | 
| 
 Oracle Text  | 
 Oracle Text is being used - there is at least one Oracle text index  | 
| 
 PL/SQL Native Compilation  | 
 PL/SQL Native Compilation is being used - there is at least one natively compiled PL/SQL library unit in the database.  | 
| 
 Real Application Clusters (RAC)  | 
 Oracle Real Application Clusters (Oracle RAC) is configured.  | 
| 
 Recovery Area  | 
 The recovery area is configured.  | 
| 
 Recovery Manager (RMAN)  | 
 Recovery Manager (RMAN) is being used to backup the database.  | 
| 
 RMAN - Disk Backup  | 
 Recovery Manager (RMAN) is being used to backup the database to disk.  | 
| 
 RMAN - Tape Backup  | 
 Recovery Manager (RMAN) is being used to backup the database to tape.  | 
| 
 Backup ZLIB Compression  | 
 ZLIB compressed backups are being used.  | 
| 
 Backup BZIP2 Compression  | 
 BZIP2 compressed backups are being used.  | 
| 
 Backup BASIC Compression  | 
 BASIC compressed backups are being used.  | 
| 
 Backup LOW Compression  | 
 LOW compressed backups are being used.  | 
| 
 Backup MEDIUM Compression  | 
 MEDIUM compressed backups are being used.  | 
| 
 Backup HIGH Compression  | 
 HIGH compressed backups are being used.  | 
| 
 Long-term Archival Backup  | 
 Long-term archival backups are being used.  | 
| 
 Multi Section Backup  | 
 Multi section backups are being used.  | 
| 
 Block Media Recovery  | 
 Block Media Recovery is being used to repair the database.  | 
| 
 Restore Point  | 
 Restore Points are being used as targets for Flashback  | 
| 
 Compression Advisor  | 
 Compression Advisor has been used.  | 
| 
 Real-Time SQL Monitoring  | 
 Real-Time SQL Monitoring Usage.  | 
| 
 SQL Tuning Set (user)  | 
 A SQL Tuning Set has been created in the database in a user schema.  | 
| 
 SQL Tuning Set (system)  | 
 A SQL Tuning Set has been created in the database in the SYS schema.  | 
| 
 Automatic SQL Tuning Advisor  | 
 Automatic SQL Tuning Advisor has been used.  | 
| 
 SQL Profile  | 
 SQL profiles have been used.  | 
| 
 Database Replay: Workload Capture  | 
 Database Replay: Workload was ever captured.  | 
| 
 Database Replay: Workload Replay  | 
 Database Replay: Workload was ever replayed.  | 
| 
 Streams (system)  | 
 Oracle Streams processes have been configured  | 
| 
 Streams (user)  | 
 Users have configured Oracle Streams AQ  | 
| 
 Transparent Gateway  | 
 Heterogeneous Connectivity, access to a non-Oracle system, has been configured.  | 
| 
 Virtual Private Database (VPD)  | 
 Virtual Private Database (VPD) policies are being used.  | 
| 
 Workspace Manager  | 
 There is at least one version enabled table.  | 
| 
 XDB  | 
 XDB feature is being used.  | 
| 
 Application Express  | 
 Application Express feature is being used.  | 
| 
 LOB  | 
 Persistent LOBs are being used.  | 
| 
 Object  | 
 Object feature is being used.  | 
| 
 Extensibility  | 
 Extensibility feature is being used.  | 
| 
 SQL Plan Management  | 
 SQL Plan Management has been used.  | 
| 
 Rules Manager  | 
 Rules Manager and Expression Filter  | 
| 
 Oracle Utility Datapump (Export)  | 
 Oracle Utility Datapump (Export) has been used.  | 
| 
 Oracle Utility Datapump (Import)  | 
 Oracle Utility Datapump (Import) has been used.  | 
| 
 Oracle Utility SQL Loader (Direct Path Load)  | 
 Oracle Utility SQL Loader (Direct Path Load) has been used.  | 
| 
 Oracle Utility Metadata API  | 
 Oracle Utility (Metadata API) has been used.  | 
| 
 Oracle Utility External Table  | 
 Oracle Utility External Table has been used.  | 
| 
 Result Cache  | 
 The Result Cache feature has been used.  | 
| 
 Transparent Data Encryption  | 
 Transparent Database Encryption is being used. There is at least one column or tablespace that is encrypted.  | 
| 
 Oracle Multimedia  | 
 Oracle Multimedia has been used  | 
| 
 Oracle Multimedia DICOM  | 
 Oracle Multimedia DICOM (Digital Imaging and COmmunications in Medicine) has been used  | 
| 
 Materialized Views (User)  | 
 User Materialized Views exist in the database  | 
| 
 Change Data Capture  | 
 Change Data Capture exit in the database  | 
| 
 Services  | 
 Oracle Services.  | 
| 
 Semantics/RDF  | 
 A semantic network has been created indicating usage of the Oracle Semantics Feature.  | 
| 
 SecureFiles (user)  | 
 SecureFiles is being used  | 
| 
 SecureFiles (system)  | 
 SecureFiles is being used by system users  | 
| 
 SecureFile Encryption (user)  | 
 SecureFile Encryption is being used  | 
| 
 SecureFile Encryption (system)  | 
 SecureFile Encryption is being used by system users  | 
| 
 SecureFile Compression (user)  | 
 SecureFile Compression is being used  | 
| 
 SecureFile Compression (system)  | 
 SecureFile Compression is being used by system users  | 
| 
 SecureFile Deduplication (user)  | 
 SecureFile Deduplication is being used  | 
| 
 SecureFile Deduplication (system)  | 
 SecureFile Deduplication is being used by system users  | 
| 
 Segment Advisor (user)  | 
 Segment Advisor has been used. There is at least one user task executed.  | 
| 
 HeapCompression  | 
 Heap Compression is being used  | 
| 
 Hybrid Columnar Compression  | 
 Hybrid Columnar Compression is used  | 
| 
 Segment Shrink  | 
 Segment Shrink has been used.  | 
| 
 Job Scheduler  | 
 Job Scheduler feature is being used.  | 
| 
 Oracle Java Virtual Machine (user)  | 
 OJVM has been used by at least one non-system user  | 
| 
 Oracle Java Virtual Machine (system)  | 
 OJVM default system users  | 
| 
 Exadata  | 
 Exadata is being used  |