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Example of viewing disk header content in Oracle Database KFOD

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OracleDatabaseKFOD view disk header contentThe related operations are what we will introduce in this article. Let's take a look at this part.

The content of the disk header is intercepted here:

 
 
    
  
  
  1. [Oracle @ rac2 ~] $ Kfed read/dev/mapper/datap1
    2. 
  
  
  2. Kfbh. endian: 1; 0x000: 0x01
    3. 
  
  
  3. Kfbh. hard: 130; 0x001: 0x82
    4. 
  
  
  4. Kfbh. type: 1; 0x002: KFBTYP_DISKHEAD
    5. 
  
  
  5. Kfbh. datfmt: 1; 0x003: 0x01
    6. 
  
  
  6. Kfbh. block. blk: 0; 0x004: T = 0 NUMB = 0x0
    7. 
  
  
  7. Kfbh. block. obj: 2147483648; 0x008: TYPE = 0x8NUMB = 0x0
    8. 
  
  
  8. Kfbh. check: 1508168608; 0x00c: 0x59e4d3a0
    9. 
  
  
  9. Kfbh. fcn. base: 0; 0x10: 0x00000000
    10. 
  
  
  10. Kfbh. fcn. wrap: 0; 0x014: 0x00000000
    11. 
  
  
  11. Kfbh. spare1: 0; 0x018: 0x00000000
    12. 
  
  
  12. Kfbh. spare2: 0; 0x01c: 0x00000000
    13. 
  
  
  13. Kfdhdb. driver. provstr: ORCLDISKDATA; 0x000: length = 12
    14. 
  
  
  14. --> Disk volume name
    15. 
  
  
  15. Kfdhdb. driver. reserved [0]: 1096040772; 0x008: 0x41544144
    16. 
  
  
  16. Kfdhdb. driver. reserved [1]: 0; 0x00c: 0x00000000
    17. 
  
  
  17. Kfdhdb. driver. reserved [2]: 0; 0x010: 0x00000000
    18. 
  
  
  18. Kfdhdb. driver. reserved [3]: 0; 0x014: 0x00000000
    19. 
  
  
  19. Kfdhdb. driver. reserved [4]: 0; 0x018: 0x00000000
    20. 
  
  
  20. Kfdhdb. driver. reserved [5]: 0; 0x01c: 0x00000000
    21. 
  
  
  21. Kfdhdb. compat: 168820736; 0x020: 0x0a100000
    22. 
  
  
  22. Kfdhdb. dsknum: 0; 0x024: 0x0000
    23. 
  
  
  23. Kfdhdb. grptyp: 1; 0x026: KFDGTP_EXTERNAL
    24. 
  
  
  24. --> ThisindicatesRedundancy for Group. Check TYPE in query output.
    25. 
  
  
  25. Kfdhdb. hdrsts: 3; 0x027: KFDHDR_MEMBER
    26. 
  
  
  26. --> This indicatesDiskHeader status. Here it indicates it is member of Group.
    27. 
  
  
  27. Kfdhdb. dskname: DATA; 0x028: length = 4
    28. 
  
  
  28. --> This indicatesDiskName
    29. 
  
  
  29. Kfdhdb. kgname: DATA; 0x048: length = 4
    30. 
  
  
  30. --> This indicatestheGroup Name for the disk.
    31. 
  
  
  31. Kfdhdb. fgname: DATA; 0x068: length = 4
    32. 
  
  
  32. --> This indicatestheFailure Group Name.
    33. 
  
  
  33. Kfdhdb. capname:; 0x088: length = 0
    34. 
  
  
  34. Kfdhdb. crestmp. hi: 32952076; 0x0a8: HOUR = 0 xcDAYS = 0x18 MNTH = 0x3 YEAR = 0x7db
    35. 
  
  
  35. Kfdhdb. crestmp. lo: 3374491648; 0x0ac: USEC = 0x0MSEC = 0xaa SECS = 0x12 MINS = 0x32
    36. 
  
  
  36. Kfdhdb. mntstmp. hi: 32955120; 0x0b0: HOUR = 0x10DAYS = 0x17 MNTH = 0x6 YEAR = 0x7db
    37. 
  
  
  37. Kfdhdb. mntstmp. lo: 3440417792; 0x0b4: USEC = 0x0MSEC = 0x27 SECS = 0x11 MINS = 0x33
    38. 
  
  
  38. Kfdhdb. secsize: 512; 0x0b8: 0x0200
    39. 
  
  
  39. Kfdhdb. blksize: 4096; 0x0ba: 0x1000
    40. 
  
  
  40. Kfdhdb. ausize: 1048576; 0x0bc: 0x00100000
    41. 
  
  
  41. Kfdhdb. mfact: 113792; 0x0c0: 0x0001bc80
    42. 
  
  
  42. Kfdhdb. dsksize: 11993; 0x0c4: 0x00002ed9
    43. 
  
  
  43. Kfdhdb. pmcnt: 2; 0x0c8: 0x00000002
    44. 
  
  
  44. Kfdhdb. fstlocn: 1; 0x0cc: 0x00000001
    45. 
  
  
  45. Kfdhdb. altlocn: 2; 0x0d0: 0x00000002
    46. 
  
  
  46. Kfdhdb. f1b1locn: 2; 0x0d4: 0x00000002
    47. 
  
  
  47. Kfdhdb. redomirrors [0]: 0; 0x0d8: 0x0000
    48. 
  
  
  48. Kfdhdb. redomirrors [1]: 0; 0x0da: 0x0000
    49. 
  
  
  49. Kfdhdb. redomirrors [2]: 0; 0x0dc: 0x0000
    50. 
  
  
  50. Kfdhdb. redomirrors [3]: 0; 0x0de: 0x0000
    51. 
  
  
  51. Kfdhdb. dbcompat: 168820736; 0x0e0: 0x0a100000
    52. 
  
  
  52. Kfdhdb. kgstmp. hi: 32952076; 0x0e4: HOUR = 0 xcDAYS = 0x18 MNTH = 0x3 YEAR = 0x7db
    53. 
  
  
  53. Kfdhdb. kgstmp. lo: 3374396416; 0x0e8: USEC = 0x0MSEC = 0x4d SECS = 0x12 MINS = 0x32
    54. 
  
  
  54. Kfdhdb. ub4spare [0]: 0; 0x0ec: 0x00000000
    55. 
  
  
  55. Kfdhdb. ub4spare [1]: 0; 0x0: 0x00000000
    56. 
  
  
  56. ......
    57. 
  
  
  57. Kfdhdb. ub4spare [55]: 0; 0x1c8: 0x00000000
    58. 
  
  
  58. Kfdhdb. ub4spare [56]: 0; 0x1cc: 0x00000000
    59. 
  
  
  59. Kfdhdb. ub4spare [57]: 0; 0x1d0: 0x00000000
    60. 
  
  
  60. Kfdhdb. acdb. aba. seq: 0; 0x1d4: 0x00000000
    61. 
  
  
  61. Kfdhdb. acdb. aba. blk: 0; 0x1d8: 0x00000000
    62. 
  
  
  62. Kfdhdb. acdb. ents: 0; 0x1 DC: 0x0000
    63. 
  
  
  63. Kfdhdb. acdb. ub2spare: 0; 0x1de: 0x0000
    64.

The above is an example of how to view disk header content in the Oracle database KFOD. We will introduce this article here, and hope this introduction will help you gain some benefits!

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