script：查看redo产生的历史信息
SQL> alter session set nls_date_format='dd-mon-yy';
SQL> set lines 160 pages 1000 echo off feedback off
SQL> col stat_name for a25
SQL> col date_time for a40
SQL> col BEGIN_INTERVAL_TIME for a20
SQL> col END_INTERVAL_TIME for a20
SQL> prompt "Enter the date in DD-Mon-YY Format and Stats you want to trend like 'redo size','physical reads','physical writes','session logical reads' etc."
"Enter the date in DD-Mon-YY Format and Stats you want to trend like 'redo size','physical reads','physical writes','session logical reads' etc."
SQL>
SQL> WITH sysstat AS
2 (select sn.begin_interval_time begin_interval_time,
3 sn.end_interval_time end_interval_time,
4 ss.stat_name stat_name,
5 ss.value e_value,
6 lag(ss.value, 1) over(order by ss.snap_id) b_value
7 from dba_hist_sysstat ss, dba_hist_snapshot sn
8 where trunc(sn.begin_interval_time) > sysdate-10
9 and ss.snap_id = sn.snap_id
10 and ss.dbid = sn.dbid
11 and ss.instance_number = sn.instance_number
12 and ss.dbid = (select dbid from v$database)
13 and ss.instance_number = 1
14 and ss.stat_name = 'redo size')
15 select to_char(BEGIN_INTERVAL_TIME, 'mm/dd/yy_hh24_mi') || to_char(END_INTERVAL_TIME, '_hh24_mi') date_time,
16 stat_name,
17 round((e_value - nvl(b_value,0)) / (extract(day from(end_interval_time - begin_interval_time)) * 24 * 60 * 60
18 + extract(hour from(end_interval_time - begin_interval_time)) * 60 * 60
19 + extract(minute from(end_interval_time - begin_interval_time)) * 60 + extract(second from(end_interval_time - begin_interval_time))),0) per_sec
20 from sysstat where(e_value - nvl(b_value,0)) > 0 and nvl(b_value,0) > 0
21 /
DATE_TIME STAT_NAME PER_SEC
---------------------------------------- ------------------------- ----------
08/28/13_09_00_10_00 redo size 473
08/28/13_10_00_11_00 redo size 422
08/28/13_11_00_12_00 redo size 426
08/28/13_12_00_13_00 redo size 474
08/28/13_13_00_14_00 redo size 513
08/28/13_14_00_15_00 redo size 529
08/28/13_15_00_16_00 redo size 544
08/28/13_16_00_17_00 redo size 416
08/28/13_17_00_18_00 redo size 408
08/28/13_18_00_19_00 redo size 423
08/28/13_19_00_20_00 redo size 428
08/28/13_20_00_21_00 redo size 448
08/28/13_21_00_22_00 redo size 501
08/28/13_22_00_23_00 redo size 456
08/28/13_23_00_00_00 redo size 478
08/29/13_00_00_01_00 redo size 454
08/29/13_01_00_02_00 redo size 480
08/29/13_02_00_03_00 redo size 538
08/29/13_03_00_04_00 redo size 489
08/29/13_04_00_05_00 redo size 512
08/29/13_05_00_06_00 redo size 541
08/29/13_06_00_07_00 redo size 526
08/29/13_07_00_08_00 redo size 559
08/29/13_08_00_09_00 redo size 15168
08/29/13_09_00_10_00 redo size 573
08/29/13_10_00_11_00 redo size 434
08/29/13_11_00_12_00 redo size 441
08/29/13_12_00_13_00 redo size 435
08/29/13_13_00_14_00 redo size 443
08/29/13_14_00_15_00 redo size 430
08/29/13_15_00_16_00 redo size 448
08/29/13_16_00_17_00 redo size 431
08/29/13_17_00_18_00 redo size 413
08/29/13_18_00_19_00 redo size 428
08/29/13_19_00_20_00 redo size 506
08/29/13_20_00_21_00 redo size 460
08/29/13_21_00_22_00 redo size 506
08/29/13_22_00_23_00 redo size 10098
08/29/13_23_00_00_00 redo size 588
08/30/13_00_00_01_00 redo size 453
08/30/13_01_00_02_00 redo size 562
08/30/13_02_00_03_00 redo size 549
08/30/13_03_00_04_00 redo size 476
08/30/13_04_00_05_00 redo size 471
08/30/13_05_00_06_00 redo size 512
08/30/13_06_00_07_00 redo size 548
08/30/13_07_00_08_00 redo size 585
08/30/13_08_00_09_00 redo size 15752
08/30/13_09_00_10_00 redo size 541
08/30/13_10_00_11_00 redo size 457
08/30/13_11_00_12_00 redo size 443
08/30/13_12_00_13_00 redo size 456
08/30/13_13_00_14_00 redo size 473
08/30/13_14_00_15_00 redo size 503
08/30/13_15_00_16_00 redo size 460
08/30/13_16_00_17_00 redo size 491
08/30/13_17_00_18_00 redo size 592
08/30/13_18_00_19_00 redo size 536
08/30/13_19_00_20_00 redo size 533
08/30/13_20_00_21_00 redo size 551
08/30/13_21_00_22_00 redo size 869
08/30/13_22_00_23_00 redo size 9895
08/30/13_23_00_00_00 redo size 543
08/31/13_00_00_01_00 redo size 432
08/31/13_01_00_02_00 redo size 460
08/31/13_02_00_03_00 redo size 445
08/31/13_03_00_04_00 redo size 444
08/31/13_04_00_05_00 redo size 509
08/31/13_05_00_06_00 redo size 520
08/31/13_06_00_07_00 redo size 566
08/31/13_07_00_08_00 redo size 508
08/31/13_08_00_09_00 redo size 14947
08/31/13_09_00_10_00 redo size 449
08/31/13_10_00_11_00 redo size 6322
08/31/13_11_00_12_00 redo size 444
08/31/13_12_00_13_00 redo size 463
08/31/13_13_00_14_00 redo size 478
08/31/13_14_00_15_00 redo size 1019
08/31/13_15_00_16_00 redo size 461
08/31/13_16_00_17_00 redo size 481
08/31/13_17_00_18_00 redo size 440
08/31/13_18_00_19_00 redo size 1851
08/31/13_19_00_20_00 redo size 562
08/31/13_20_00_21_00 redo size 442
08/31/13_21_00_22_00 redo size 423
08/31/13_22_00_23_00 redo size 3649
08/31/13_23_00_00_00 redo size 573
09/01/13_00_00_01_00 redo size 500
09/01/13_01_00_02_00 redo size 462
09/01/13_02_00_03_00 redo size 447
09/01/13_03_00_04_00 redo size 464
09/01/13_04_00_05_00 redo size 473
09/01/13_05_00_06_00 redo size 1058
09/01/13_06_00_07_00 redo size 1929
09/01/13_07_00_08_00 redo size 470
09/01/13_08_00_09_00 redo size 15616
09/01/13_09_00_10_00 redo size 496
09/01/13_10_00_11_00 redo size 524
09/01/13_11_00_12_00 redo size 576
09/01/13_12_00_13_00 redo size 517
09/01/13_13_00_14_00 redo size 533
09/01/13_14_00_15_00 redo size 516
09/01/13_15_00_16_00 redo size 436
09/01/13_16_00_17_00 redo size 518
09/01/13_17_00_18_00 redo size 450
09/01/13_18_00_19_00 redo size 476
09/01/13_19_00_20_00 redo size 473
09/01/13_20_00_21_00 redo size 510
09/01/13_21_00_22_00 redo size 469
09/01/13_22_00_23_00 redo size 465
09/01/13_23_00_00_00 redo size 548
09/02/13_00_00_01_00 redo size 531
09/02/13_01_00_02_00 redo size 564
09/02/13_02_00_03_00 redo size 538
09/02/13_03_00_04_00 redo size 398
09/02/13_04_00_05_00 redo size 532
09/02/13_05_00_06_00 redo size 564
09/02/13_06_00_07_00 redo size 458
09/02/13_07_00_08_00 redo size 457
09/02/13_08_00_09_00 redo size 15899
09/02/13_09_00_10_00 redo size 507
09/02/13_10_00_11_00 redo size 427
09/02/13_11_00_12_00 redo size 428
09/02/13_12_00_13_00 redo size 541
09/02/13_13_00_14_00 redo size 540
09/02/13_14_00_15_00 redo size 515
09/02/13_15_00_16_00 redo size 499
09/02/13_16_00_17_00 redo size 526
09/02/13_17_00_18_00 redo size 571
09/02/13_18_00_19_00 redo size 542
09/02/13_19_00_20_00 redo size 492
09/02/13_20_00_21_00 redo size 449
09/02/13_21_00_22_00 redo size 678
09/02/13_22_00_23_00 redo size 9696
09/02/13_23_00_00_00 redo size 476
09/03/13_00_00_01_00 redo size 464
09/03/13_01_00_02_00 redo size 493
09/03/13_02_00_03_00 redo size 565
09/03/13_03_00_04_00 redo size 595
09/03/13_04_00_05_00 redo size 510
09/03/13_05_00_06_00 redo size 581
09/03/13_06_00_07_00 redo size 550
09/03/13_07_00_08_00 redo size 559
09/03/13_08_00_09_00 redo size 16381
09/03/13_09_00_10_00 redo size 487
09/03/13_10_00_11_00 redo size 425
09/03/13_11_00_12_00 redo size 443
09/03/13_12_00_13_00 redo size 458
09/03/13_13_00_14_00 redo size 530
09/03/13_14_00_15_00 redo size 574
09/03/13_15_00_16_00 redo size 478
09/03/13_16_00_17_00 redo size 550
09/03/13_17_00_18_00 redo size 588
09/03/13_18_00_19_00 redo size 593
09/03/13_19_00_20_00 redo size 567
09/03/13_20_00_21_00 redo size 473
09/03/13_21_00_22_00 redo size 457
09/03/13_22_00_23_00 redo size 520
09/03/13_23_00_00_00 redo size 516
09/04/13_00_00_01_00 redo size 493
09/04/13_01_00_02_00 redo size 484
09/04/13_02_00_03_00 redo size 581
09/04/13_03_00_04_00 redo size 570
09/04/13_04_00_05_00 redo size 529
09/04/13_05_00_06_00 redo size 562
09/04/13_06_00_07_00 redo size 566
09/04/13_07_00_08_00 redo size 529
09/04/13_08_00_09_00 redo size 15998
09/04/13_09_00_10_00 redo size 549
09/04/13_10_00_11_00 redo size 548
09/04/13_11_00_12_00 redo size 497
09/04/13_12_00_13_00 redo size 587
09/04/13_13_00_14_00 redo size 436
09/04/13_15_00_16_00 redo size 584
09/04/13_16_00_17_00 redo size 461
09/04/13_17_00_18_00 redo size 512
09/04/13_18_00_19_00 redo size 406
09/04/13_19_00_20_00 redo size 383
09/04/13_20_00_21_00 redo size 396
09/04/13_21_00_22_00 redo size 1057
09/04/13_22_00_23_00 redo size 9559
09/04/13_23_00_00_00 redo size 485
09/05/13_00_00_01_00 redo size 434
09/05/13_01_00_02_00 redo size 419
09/05/13_02_00_03_00 redo size 429
09/05/13_03_00_04_00 redo size 392
09/05/13_04_00_05_00 redo size 442
09/05/13_05_00_06_00 redo size 498
09/05/13_06_00_07_00 redo size 501
09/05/13_07_00_08_00 redo size 439
09/05/13_08_00_09_00 redo size 16155
09/05/13_09_00_10_00 redo size 593
09/05/13_10_00_11_00 redo size 494
09/05/13_12_00_13_00 redo size 562
09/05/13_13_00_14_00 redo size 512
09/05/13_15_00_16_00 redo size 443
09/05/13_16_00_17_00 redo size 408
09/05/13_17_00_18_00 redo size 405
09/05/13_18_00_19_00 redo size 383
09/05/13_19_00_20_00 redo size 404
09/05/13_20_00_21_00 redo size 412
09/05/13_21_00_22_00 redo size 581
09/05/13_22_00_23_00 redo size 10250
09/05/13_23_00_00_00 redo size 537
09/06/13_00_00_01_00 redo size 414
09/06/13_01_00_02_00 redo size 419
09/06/13_02_00_03_00 redo size 409
09/06/13_03_00_04_00 redo size 409
09/06/13_04_00_05_00 redo size 417
09/06/13_05_00_06_00 redo size 473
09/06/13_06_00_07_00 redo size 499
09/06/13_07_00_08_00 redo size 451
09/06/13_08_00_09_00 redo size 392
09/06/13_09_00_10_00 redo size 434
09/06/13_10_00_11_00 redo size 432
09/06/13_11_00_12_00 redo size 483
09/06/13_12_00_13_00 redo size 389
09/06/13_13_00_14_00 redo size 445
09/06/13_14_00_15_00 redo size 481