DB2 - Problem description
| Problem IT03657 | Status: Closed | 
DB2 INSPECT INCORRECTLY REPORTS EMP PAGE ERRORS FOR LARGE LOB TABLES  | |
| product: | |
DB2 FOR LUW / DB2FORLUW / A10 - DB2  | |
| Problem description: | |
When there is a large amount of LOB data in a table so that 
level 2 EMP pages are required then the INSPECT command can 
incorrectly calculate the next EMP page resulting in the errors 
similar to the following: 
 
DATABASE: SAMPLE 
VERSION : SQL09076 
 
2014-05-15-09.06.15.460665 
 
Action: CHECK TABLE 
Schema name: DB2INST1 
Table name: TABLELOB 
Tablespace ID: 11  Object ID: 1037 
Result file name: tb_inspect_trc.txt 
 
    Table phase start (ID Signed: 1037, Unsigned: 1037; 
Tablespace ID: 11) : DB2INST1.TABLELOB 
 
      Data phase start. Object: 1037  Tablespace: 11 
      The index type is 2 for this table. 
       Traversing DAT extent map, anchor 626164. 
       Extent map traversal complete. 
       DAT Object Summary: Total Pages 1369 - Used Pages 1369 - 
Free Space 7 % 
      Data phase end. 
 
      Index phase start. Object: 524  Tablespace: 15 
       Traversing INX extent map, anchor 460. 
       Extent map traversal complete. 
       INX Object Summary: Total Pages 437 - Used Pages 437 
      Index phase end. 
 
      LOB phase start. Object: 6  Tablespace: 6 
       Traversing LOB extent map, anchor 44. 
      Error: In page 19944, physical page 19944 of object 6 in 
tablespace 6, pagesize 4096. 
      Error: Hexadecimal dump of page contents. 
0000  *3FD848E9 3DD7CB35 4760D8EB B879CD10* 
*..H....5G....y..* 
... 
0FF0  *D1EFD352 8B3E89D6 02CDA36A F314F127* 
*...R.......j....* 
      Error: Page header invalid revnum value 0. 
      Error: Page header invalid field begoff value 55359, 
expected value 48. 
      Error: Page header invalid field datlen value 59720, 
expected value 4048. 
      Error: Page header LSN (x06DAAD703BA52B81) is greater than 
database current LSN (x0000014556D31436). 
      Error: Page header invalid field poolPageNumber value 
902551357, expected value 19944. 
      Error: Page header invalid field objectID value 30687, 
expected value 6. 
      Error: Page header invalid field objectType value 216, 
expected value 67. 
      Error: Page header invalid field objectPageNumber value 
902551357, expected value 19944. 
      Error: Page header invalid field tablespaceSeed value 
281901496, expected value 6. 
      Error: Found error type  (scan relative page 143740000 EMP 
16952012 with entries 1011440027 > max 1000) drtbps.C 
dartNextEMPExtent 1983 . 
      Error: In page 19945, physical page 19945 of object 6 in 
tablespace 6, pagesize 4096. 
      Error: Hexadecimal dump of page contents. 
0000  *1D93B0F6 1B36ADB3 BB5C268B E06C32A7* 
*.....6.......l2.* 
 
The Pages reported to be having the problem will not be 
consistent and may change on each run of the INSPECT command. | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * All DB2 users * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 LUW 10.1 Fix Pack 5 * ****************************************************************  | |
| Local Fix: | |
| Solution | |
First fixed in DB2 LUW 10.1 Fix Pack 5  | |
| Workaround | |
not known / see Local fix  | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified :  | 08.08.2014 13.07.2015 13.07.2015  | 
| Problem solved at the following versions (IBM BugInfos) | |
| Problem solved according to the fixlist(s) of the following version(s) | |
| 10.1.0.5 | 
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