key word : AWR db_hist table & interconnect bandwidth
ODM Data:
dba_hist_ic_client_stats
DBA_HIST_IC_CLIENT_STATS displays information about the usage of an interconnect device by the instance. The information is divided into several areas of the Oracle Database, each identified by the NAME value.
Column Datatype NULL Description
SNAP_ID NUMBER NOT NULL Unique snapshot ID
DBID NUMBER NOT NULL Database ID for the snapshot
INSTANCE_NUMBER NUMBER NOT NULL Instance number for the snapshot
NAME VARCHAR2(9) NOT NULL Identifies the area of the Oracle Database:
ipq - Parallel query communications
dlm - Database lock management
cache - Global cache communications
All other values are internal to Oracle and are not expected to have high usage.
BYTES_SENT NUMBER Number of bytes sent by the instance since instance startup for the software area identified by NAME. This information is aggregated across all devices used by the instance.
BYTES_RECEIVED NUMBER Number of bytes received by the instance since instance startup for the software area identified by NAME. This information is aggregated across all devices used by the instance.
DBA_HIST_IC_DEVICE_STATS displays operating system information about the usage of interconnect devices by the machine. This usage contains Oracle usage but is not limited to it. The quality of the information depends on the operating system.