V$CLUSTER_INTERCONNECTS

V$CLUSTER_INTERCONNECTS displays one or more interconnects that are being used for cluster communication.

Column	Datatype	Description
NAME	VARCHAR2(15)	Name of the interconnect (such as eth0)
IP_ADDRESS	VARCHAR2(16)	IP address of the interconnect
IS_PUBLIC	VARCHAR2(4)	If the value is YES, the interface is known to the public. If the value is NO, the interface is known to be private. Note that if the CLUSTER_INTERCONNETS initialization parameter is also specified, then it is expected that the interconnect is private. Oracle expects cluster traffic to be run on private interconnects only. f the value is empty, it is unknown whether the interface is public or private. Oracle Corporation recommends that you set the interface for Real Application Clusters (RAC) communication in the Oracle Cluster Repository (OCR).
SOURCE	VARCHAR2(31)	Indicates where this interface was picked up from: Oracle Cluster Repository - Interface was configured in the OCR and Oracle Database found the interface in the OCR Operating-system dependent software - Oracle Database automatically detects this CLUSTER_INTERCONNECTS parameter - This initialization parameter was set

Oracle data dictionary views

Oracle dynamic performance views

Last updated: 2009-11-23 Monday

V$CONFIGURED_INTERCONNECTS

V$CONFIGURED_INTERCONNECTS displays all interconnects that Oracle is aware of. This view attempts to answer the question of where Oracle found the information about a specific interconnect.

Column	Datatype	Description
NAME	VARCHAR2(15)	Name of the interconnect (such as eth0)
IP_ADDRESS	VARCHAR2(16)	IP address of the interconnect
IS_PUBLIC	VARCHAR2(4)	If the value is YES, the interface is known to the public. If the value is NO, the interface is known to be private. Note that if the CLUSTER_INTERCONNETS initialization parameter is also specified, then it is expected that the interconnect is private. Oracle expects cluster traffic to be run on private interconnects only. If the value is empty, it is unknown whether the interface is public or private. Oracle Corporation recommends that you set the interface for Real Application Clusters (RAC) communication in the Oracle Cluster Repository (OCR).
SOURCE	VARCHAR2(31)	Indicates where this interface was picked up from: Oracle Cluster Repository - Interface was configured in the OCR and Oracle Database found the interface in the OCR Operating-system dependent software - Oracle Database automatically detects this CLUSTER_INTERCONNECTS parameter - This initialization parameter was set

Oracle data dictionary views

Oracle dynamic performance views

Last updated: 2009-11-23 Monday

V$CORRUPT_XID_LIST

V$CORRUPT_XID_LIST displays all corrupted XIDs.

Column	Datatype	Description
CORRUPT_XID	VARCHAR2(256)	Name of corrupt XID

Note:

1.        Oracle 11g introduced a new feature called health monitor, which check undo segment integrity. This check finds logical undo corruptions. After locating an undo corruption, this check uses PMON and SMON to try to recover the corrupted transaction. If this recovery fails, then Health Monitor stores information about the corruption in V$CORRUPT_XID_LIST. Most undo corruptions can be resolved by forcing a commit.

Oracle data dictionary views

Oracle dynamic performance views

Last updated: 2009-11-23 Monday

V$CLIENT_STATS

V$CLIENT_STATS displays measures for all sessions that are active for the client identifier per instance. The statistics available in this view are a subset of those available in V$SESSTAT and V$SESS_TIME_MODEL.

Column	Datatype	Description
CLIENT_IDENTIFIER	VARCHAR2(64)	Client identifier
STAT_ID	NUMBER	Statistic identifier
STAT_NAME	VARCHAR2(64)	Derived statistic name from V$STATNAME and V$SESS_TIME_MODEL
VALUE	NUMBER	Cumulative value (in microseconds)

Note:

1.        Setting the STATISTICS_LEVEL parameter to BASIC disables the collection of many of the important
statistics required by Oracle Database features and functionality, including:
-- Automatic Workload Repository (AWR) Snapshots
-- Automatic Database Diagnostic Monitor (ADDM)
-- All server-generated alerts
-- Automatic SGA Memory Management
-- Automatic optimizer statistics collection
-- Object level statistics
-- End to End Application Tracing (V$CLIENT_STATS)
-- Database time distribution statistics (V$SESS_TIME_MODEL and V$SYS_TIME_MODEL)
-- Service level statistics
-- Buffer cache advisory
-- MTTR advisory
-- Shared pool sizing advisory
-- Segment level statistics
-- PGA Target advisory
-- Timed statistics
-- Monitoring of statistics

Oracle data dictionary views

Oracle dynamic performance views

Last updated: 2009-11-23 Monday