Reading Partition directly...

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• Impact of setting the interval partitioning off and then on again

  Hi all

  Have discovered that to split the partitions of a partitioned table Beach-interval, in that we need to define the partitioning interval all issue the command split then on again.

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  4. turn on range partitioning

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  Hello

  The statistics "block the physical demands reading total multi" should count the number of calls to e/s over a reading block (doc here). So I expect to be equal to the 'file db scattered read' (or 'direct path read' if read series direct-path of access is used).

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  ---------------------------------------- ----------

  total read physics applications of e/s 30

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  total number of physical read 8192000 bytes

  physical reads 1000

  physical reads cache 1000

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  ---------------------------------------- -----------

  File disk IO 1 operations

  1 log file sync

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  SQL * Net message to client 20

  SQL * Net client message 19

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  ---------- ---------- ------------

  30       1000            0

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  SQL > column tracefile new_value by trace file

  SQL > select the process trace file $ v where addr = (select paddr in session $ v where sid = sys_context ('USERENV', 'SID'));

  TRACE FILE

  ------------------------------------------------------------------------

  /U01/app/Oracle/diag/RDBMS/dbvs103/DBVS103/trace/DBVS103_ora_31822.TRC

  SQL > host mv and tracefile series-live - path.trc

  SQL > host grep ^ WAITING series-live - path.trc | grep read | NL

  1. WAIT #139711696129328: nam = "db-scattered files reading" ela = 456 file #= 6 block #= 5723 blocks = 5 obj #= tim 95361 = 48370540177

  2. WAIT #139711696129328: nam = "db-scattered files reading" ela = 397 file #= 6 block #= 5728 blocks = 8 obj #= tim 95361 = 48370542452

  3. wait FOR #139711696129328: nam = "db-scattered files reading" ela = 449 file #= 6 block #= 5737 blocks = 7 obj #= tim 95361 = 48370543216

  4 WAIT #139711696129328: nam = "db-scattered files reading" ela = 472 file #= 6 block #= 5744 blocks = 8 obj #= tim 95361 = 48370543816

  5. WAIT #139711696129328: nam = "db-scattered files reading" ela = 334 file #= 6 block #= 5753 blocks = 7 obj #= tim 95361 = 48370544276

  6 WAIT #139711696129328: nam = "db-scattered files reading" ela = 425 file #= 6 block #= 5888 blocks = 8 obj #= tim 95361 = 48370544848

  7 WAIT #139711696129328: nam = "db-scattered files reading" ela = 304 case #= 6 block #= 5897 blocks = 7 obj #= tim 95361 = 48370545370

  8 WAIT #139711696129328: nam = "db-scattered files reading" ela = 599 file #= 6 block #= 5904 blocks = 8 obj #= tim 95361 = 48370546190

  9 WAIT #139711696129328: nam = "db-scattered files reading" ela = 361 file #= 6 block #= 5913 blocks = 7 obj #= tim 95361 = 48370546682

  10 WAIT #139711696129328: nam = "db-scattered files reading" ela = 407 file #= 6 block #= 5920 blocks = 8 obj #= tim 95361 = 48370547224

  11 WAIT #139711696129328: nam = "db-scattered files reading" ela = 359 file #= 6 block #= 5929 blocks = 7 obj #= tim 95361 = 48370547697

  12 WAIT #139711696129328: nam = "db-scattered files reading" ela = 381 file #= 6 block #= 5936 blocks = 8 obj #= tim 95361 = 48370548287

  13 WAIT #139711696129328: nam = "db-scattered files reading" ela = 362 files #= 6 block #= 6345 blocks = 7 obj #= tim 95361 = 48370548762

  14 WAIT #139711696129328: nam = "db-scattered files reading" ela = 355 file #= 6 block # 6352 blocks = 8 obj #= tim 95361 = 48370549218

  15 WAIT #139711696129328: nam = "db-scattered files reading" ela = 439 file #= 6 block #= 6361 blocks = 7 obj #= tim 95361 = 48370549765

  16 WAIT #139711696129328: nam = "db-scattered files reading" ela = 370 file #= 6 block #= 6368 blocks = 8 obj #= tim 95361 = 48370550276

  17 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1379 file #= 6 block #= 7170 blocks = 66 obj #= tim 95361 = 48370552358

  18 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1205 file #= 6 block #= 7236 blocks = 60 obj #= tim 95361 = 48370554221

  19 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1356 file #= 6 block #= 7298 blocks = 66 obj #= tim 95361 = 48370556081

  20 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1385 file #= 6 block #= 7364 blocks = 60 obj #= tim 95361 = 48370557969

  21 WAIT #139711696129328: nam = "db-scattered files reading" ela = 832 file #= 6 block #= 7426 blocks = 66 obj #= tim 95361 = 48370560016

  22 WAITING #139711696129328: nam = "db-scattered files reading" ela = 1310 file #= 6 block #= 7492 blocks = 60 obj #= tim 95361 = 48370563004

  23 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1315 file #= 6 block # 9602 blocks = 66 obj #= tim 95361 = 48370564728

  24 WAIT #139711696129328: nam = "db-scattered files reading" ela = 420 file #= 6 block # 9668 blocks = 60 obj #= tim 95361 = 48370565786

  25 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1218 file #= 6 block # 9730 blocks = 66 obj #= tim 95361 = 48370568282

  26 WAIT #139711696129328: nam = "db-scattered files reading" ela = 1041 file #= 6 block #= 9796 blocks = 60 obj #= tim 95361 = 48370569809

  27 WAIT #139711696129328: nam = "db-scattered files reading" ela = file No. 300 = 6 block #= 9858 blocks = 66 obj #= tim 95361 = 48370570501

  28 WAIT #139711696129328: nam = "db-scattered files reading" ela = 281 file #= 6 block #= 9924 blocks = 60 obj #= tim 95361 = 48370571248

  29 WAIT #139711696129328: nam = "db-scattered files reading" ela = 305 file #= 6 block #= 9986 blocks = 66 obj #= tim 95361 = 48370572021

  30 WAIT #139711696129328: nam = "db-scattered files reading" ela = 347 file #= 6 block #= 10052 blocks = 60 obj #= tim 95361 = 48370573387

  So, I'm sure that I did 30 reading diluvium but block total multi physical read request = 14

  No idea why?

  Thanks in advance,

  Franck.

  Couldn't leave it alone.

  A ran some additional tests with sizes of different measure, with and without the SAMS.

  It seems that my platform includes no readings of scattered file db less than 128KB in the physical count. (or 16 blocks, given that I was with a block size of 8 KB).

  Concerning

  Jonathan Lewis

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  Hello

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  Hey godwinwong,

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  Hello

  Using oracle 11.2.0.3.

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  Jonathan Lewis

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• Cannot access local disk c after the healing of the bone!

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  Hello mohamed090909,

  Thanks for posting your question on the Microsoft answers Forum.

  I'll first see if you have a system restore point to restore from before you couldn't access C:\.
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  You could also do a upgrade in place to repair the operating system, but you don't need an installation DVD disc and not an OEM recovery disk.

  If please reply back and let us know if it helped to solve your problem or if you still need help.

  Sincerely,
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  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.