Errors creating indexes on Binary XML Tables

Question

Hi,
Oracle details are as follows:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
"CORE 11.2.0.2.0 Production"
TNS for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
I'm currently having an issue when attempting to create a suitable index on a binary xml table. I have a Binary xml table that stores a number of xml documents. I have created an index on this table as follows:
create index TEST_WQI_idx_1 on TEST_WEB_QUOTE_INDX1(OBJECT_VALUE)
INDEXTYPE IS XDB.XMLINDEX
PARAMETERS ('PATHS (INCLUDE
(/webPolicy/QuoteId))');
Querying the table with the following:
SQL> l
1 select xmlcast(xmlquery('/webPolicy/Sections/interopSection[1]/PolicyItems/item/Version/text()' PASSING OBJECT_VALUE RETURNING CONTENT)
2 as number) "VERSION",
3 xmlcast(xmlquery('/webPolicy/QuoteId/text()' PASSING OBJECT_VALUE RETURNING CONTENT)
4 as number) "QUOTEID"
5 FROM TEST_WEB_QUOTE_INDX1
6 where xmlcast(xmlquery('/webPolicy/QuoteId/text()' PASSING OBJECT_VALUE RETURNING CONTENT)
7* as number) = 22824
SQL> /
VERSION QUOTEID
1 22824
Execution Plan
Plan hash value: 3559428808
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 545 | 1071K| 1030 (1)| 00:00:19 |
| 1 | SORT AGGREGATE | | 1 | 3022 | | |
|* 2 | TABLE ACCESS BY INDEX ROWID | SYS895336_TEST_WQI__PATH_TABLE | 1 | 3022 | 2 (0)| 00:00:01 |
|* 3 | INDEX RANGE SCAN | SYS895336_TEST_WQI__PIKEY_IX | 1 | | 1 (0)| 00:00:01 |
|* 4 | FILTER | | | | | |
| 5 | TABLE ACCESS FULL | TEST_WEB_QUOTE_INDX1 | 545 | 1071K| 4 (0)| 00:00:01 |
| 6 | SORT AGGREGATE | | 1 | 3022 | | |
|* 7 | TABLE ACCESS BY INDEX ROWID| SYS895336_TEST_WQI__PATH_TABLE | 1 | 3022 | 2 (0)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | SYS895336_TEST_WQI__PIKEY_IX | 1 | | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - filter(SYS_XMLI_LOC_ISTEXT("SYS_P0"."LOCATOR","SYS_P0"."PATHID")=1)
3 - access("SYS_P0"."RID"=:B1 AND "SYS_P0"."PATHID"=HEXTORAW('5E6C') )
4 - filter(CAST( (SELECT "SYS"."STRAGG"("SYS_P2"."VALUE") FROM
"WEB_STAGING"."SYS895336_TEST_WQI__PATH_TABLE" "SYS_P2" WHERE "SYS_P2"."PATHID"=HEXTORAW('5E6C') AND
"SYS_P2"."RID"=:B1 AND SYS_XMLI_LOC_ISTEXT("SYS_P2"."LOCATOR","SYS_P2"."PATHID")=1) AS number)=22824)
7 - filter(SYS_XMLI_LOC_ISTEXT("SYS_P2"."LOCATOR","SYS_P2"."PATHID")=1)
8 - access("SYS_P2"."RID"=:B1 AND "SYS_P2"."PATHID"=HEXTORAW('5E6C') )
Note
- dynamic sampling used for this statement (level=2)
- Unoptimized XML construct detected (enable XMLOptimizationCheck for more information)
However, I also need to add an additional field to this index to allow appropriate queries against the data in the table, version number. This field can be seen from the statement above (VERSION) which runs OK and returns the data I’d expect. However, when I attempt to add this index using the following statement I get an error returned and the index becomes corrupted:
alter index TEST_WQI_idx_1 rebuild
parameters ('PATHS (INCLUDE ADD
(/webPolicy/Sections/interopSection[1]/PolicyItems/item/Version))');
After some investigation, the issue seems to revolve around the use of the [1] condition in the statement /interopSection[1]. I can create the index by removing the [1] condition, but this does not return the expected result. In actual fact, as there are 2 interopSection elements in the xml file, both with a version number of 1, the statement returns 11, which would appear to be the two version numbers concatenated together. I need to be able to reference the version number from the first interopSection in the queries against the table, and I need to be able to index this column correctly for performance issues.
I'm unsure why this xpath statement is not working correctly in the alter index statement, but returns ok when used within the query against the table and was wondering if you would be able to help me to have a working index against this element.
Thanks in advance for any help you can provide in relation to this.

Answer 1

Sorry, here is the error:
Error starting at line 20 in command:
alter index TEST_WQI_idx_1 rebuild
parameters ('PATHS (INCLUDE ADD
(/webPolicy/Sections/interopSection[1]/PolicyItems/item/Version))')
Error report:
SQL Error: ORA-29858: error occurred in the execution of ODCIINDEXALTER routine
ORA-64131: XMLIndex Metadata: failure during the looking up of the dictionary
ORA-30968: invalid XPATH or NAMESPACE option for XML Index
29858. 00000 - "error occurred in the execution of ODCIINDEXALTER routine"
*Cause:    Failed to successfully execute the ODCIIndexAlter routine.
*Action:   Check to see if the routine has been coded correctly.