Oracle-L: Control file sequential read

From: Godlewski, Melissa <Melissa.Godlewski_at_hq.doe.gov>
Date: Thu, 28 Feb 2002 19:23:23 -0800
Message-ID: <F001.0041C301.20020228192323@fatcity.com>

Listers,

On development I truncated a fairly large partitioned table, inserted the data from production via a db_link and then built partitioned indexes on the table. I was watching the v$session_waits for the session and noticed several sets of control file sequential reads during the index builds. I checked what file 2 was against the dba_data_files and it was showing rollback tablespace. Is this due to delayed block cleanout?

SID SEQ# EVENT
--------- ---------

P1TEXT                                                                  P1

P1RAW
---------------------------------------------------------------- ---------

P2TEXT                                                                  P2

P2RAW
---------------------------------------------------------------- ---------

P3TEXT                                                                  P3

P3RAW WAIT_TIME
---------------------------------------------------------------- ---------

--------- SECONDS_IN_WAIT STATE
--------------- -------------------
12 10086 control file sequential read file# 2 00000002 block# 1 00000001 blocks 1 00000001 -1 0 WAITED SHORT TIME

FILE_NAME

  FILE_ID TABLESPACE_NAME                    BYTES    BLOCKS STATUS

RELATIVE_FNO AUT MAXBYTES
--------- ------------------------------ --------- --------- ---------

--- --------- MAXBLOCKS INCREMENT_BY USER_BYTES USER_BLOCKS
--------- ------------ ---------- -----------
/u03/oradata/FDWD/rbs01.dbf 2 RBS 630194176 76928 AVAILABLE 2 NO 0 0 0 630185984 76927

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-- 
Author: Godlewski, Melissa
  INET: Melissa.Godlewski_at_hq.doe.gov

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Received on Thu Feb 28 2002 - 21:23:23 CST