Skip Headers
Oracle® Database Reference
11g Release 2 (11.2)

Part Number E25513-03
Go to Documentation Home
Home
Go to Book List
Book List
Go to Table of Contents
Contents
Go to Index
Index
Go to Master Index
Master Index
Go to Feedback page
Contact Us

Go to previous page
Previous
Go to next page
Next
PDF · Mobi · ePub

V$IOSTAT_FUNCTION_DETAIL

V$IOSTAT_FUNCTION_DETAIL displays disk I/O statistics for database functions (such as the LGWR and DBWR), broken down by file type.

Column Datatype Description
FUNCTION_ID NUMBER Function ID
FUNCTION_NAME VARCHAR2(18) Function name:
  • RMAN

  • DBWR

  • LGWR

  • ARCH

  • XDB

  • Streams AQ

  • Data Pump

  • Recovery

  • Buffer Cache Reads

  • Direct Reads

  • Direct Writes

  • Smart Scan

  • Archive Manager

  • Others

FILETYPE_ID NUMBER File type ID
FILETYPE_NAME VARCHAR2(28) File type name:
  • Control File

  • Data File

  • Log File

  • Archive Log

  • Temp File

  • Data File Backup

  • Data File Incremental Backup

  • Archive Log Backup

  • Data File Copy

  • Flashback Log

  • Data Pump Dump File

  • Other

SMALL_READ_MEGABYTES NUMBER Number of megabytes read via single block read requests
SMALL_WRITE_MEGABYTES NUMBER Number of megabytes written via single block write requests
LARGE_READ_MEGABYTES NUMBER Number of megabytes read via multiblock read requests
LARGE_WRITE_MEGABYTES NUMBER Number of megabytes written via multiblock write requests
SMALL_READ_REQS NUMBER Number of single block read requests
SMALL_WRITE_REQS NUMBER Number of single block write requests
LARGE_READ_REQS NUMBER Number of multiblock read requests
LARGE_WRITE_REQS NUMBER Number of multiblock write requests
NUMBER_OF_WAITS NUMBER Number of synchronous I/O waits by functionality
WAIT_TIME NUMBER Total synchronous I/O wait time (in milliseconds)