30.4.3.29 The schema_table_statistics and x$schema_table_statistics Views

These views summarize table statistics. By default, rows are sorted by descending total wait time (tables with most contention first).

These views user a helper view, x$ps_schema_table_statistics_io.

The schema_table_statistics and x$schema_table_statistics views have these columns:

• table_schema

  The schema that contains the table.

• table_name

  The table name.

• total_latency

  The total wait time of timed I/O events for the table.

• rows_fetched

  The total number of rows read from the table.

• fetch_latency

  The total wait time of timed read I/O events for the table.

• rows_inserted

  The total number of rows inserted into the table.

• insert_latency

  The total wait time of timed insert I/O events for the table.

• rows_updated

  The total number of rows updated in the table.

• update_latency

  The total wait time of timed update I/O events for the table.

• rows_deleted

  The total number of rows deleted from the table.

• delete_latency

  The total wait time of timed delete I/O events for the table.

• io_read_requests

  The total number of read requests for the table.

• io_read

  The total number of bytes read from the table.

• io_read_latency

  The total wait time of reads from the table.

• io_write_requests

  The total number of write requests for the table.

• io_write

  The total number of bytes written to the table.

• io_write_latency

  The total wait time of writes to the table.

• io_misc_requests

  The total number of miscellaneous I/O requests for the table.

• io_misc_latency

  The total wait time of miscellaneous I/O requests for the table.