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Oracle® Database Reference
11g Release 2 (11.2)

Part Number E17110-04
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DBA_HIST_COMP_IOSTAT

DBA_HIST_COMP_IOSTAT displays information about I/O statistics aggregated on the component level.

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
COMPONENT VARCHAR2(64) NOT NULL Component name
FILE_TYPE VARCHAR2(64) NOT NULL File type
IO_TYPE CHAR(5) NOT NULL The type of I/O performed
OPERATION CHAR(5) NOT NULL Operation name
BYTES NUMBER NOT NULL Number of bytes
IO_COUNT NUMBER NOT NULL Number of I/Os that were performed