Oracle xmltype列，創建包含以下路徑的xmlindex

我需要創建一個xmlindex on和xmltype列，系統是Oracle 11g。我使用的代碼是：收到Oracle xmltype列，創建包含以下路徑的xmlindex

CREATE INDEX "TS"."XMLINDEX_NBXML" ON "TS"."NETBOTZ" V (NBXML) INDEXTYPE IS 
XDB.XMLINDEX PARAMETERS('PATH TABLE NETBOTZ_PATH_TABLE(TABLESPACE USERS) PATHS 
(/variable-set/variable[@class="nbTempSensor"]/double-val)')

的錯誤是：
SQL錯誤

無法提交：ORA-29958：在ODCIINDEXCREATE常規ORA-30968的執行發生致命錯誤：無效的XPATH或XML索引的NAMESPACE選項

XML文件如下。我試過「/ variable-set/variable [@ class =」nbTempSensor「]/double-val」作爲路徑參數，因爲我們在視圖中成功地使用了這個參數來檢索nbTempSensor值。你能告訴路徑的正確語法是什麼嗎？預先感謝您的幫助。

<?xml version="1.0" ?> 
- <variable-set timestamp="1351899921109" time="2012-11-02 16:45:21"   
now="1351899921118"> 
- <variable varid="nbBaseEnclosure" guid="B035DF7_nbBaseEnclosure" class="nbEnclosure" 
classpath="/nbEnclosure"> 
    <u32-val>2</u32-val> 
- <metadata slotid="nbEncMenuIcons"> 
- <string-list-val> 
    <string-val>menu_link_wall_unplug.gif</string-val> 
    <string-val>menu_link_wall_error.gif</string-val> 
    <string-val>menu_link_wall.gif</string-val> 
    </string-list-val> 
    </metadata> 
- <metadata slotid="nbProductData"> 
- <struct-val> 
+ <struct-element fieldid="vendor"> 
    <string-val>NetBotz, Inc.</string-val> 
    </struct-element> 
- <struct-element fieldid="type"> 
    <string-val>Wall</string-val> 
    </struct-element> 
- <struct-element fieldid="model"> 
    <string-val>420</string-val> 
    </struct-element> 
- <struct-element fieldid="fullmodel"> 
    <string-val>NetBotz 420</string-val> 
    </struct-element> 
- <struct-element fieldid="submodel"> 
    <string-val>420 Wall</string-val> 
    </struct-element> 
- <struct-element fieldid="serial_num"> 
    <string-val>00:02:D3:03:5D:F7</string-val> 
    </struct-element> 
- <struct-element fieldid="manufacturer"> 
    <string-val>NetBotz, Inc.</string-val> 
    </struct-element> 
- <struct-element fieldid="revision"> 
    <string-val>A00</string-val> 
    </struct-element> 
- <struct-element fieldid="board_id"> 
    <string-val>0000</string-val> 
    </struct-element> 
- <struct-element fieldid="osversion"> 
    <string-val>V2_6_2_20071031_1658</string-val> 
    </struct-element> 
- <struct-element fieldid="appversion"> 
    <string-val>V2_6_2_20071031_1658</string-val> 
    </struct-element> 
- <struct-element fieldid="apcappversion"> 
    <string-val>apc_bw02_bw_262.bin</string-val> 
    </struct-element> 
- <struct-element fieldid="mac_addr"> 
    <string-val>00:02:D3:03:5D:F7</string-val> 
    </struct-element> 
- <struct-element fieldid="manuf_date"> 
    <utc-val>1232625600</utc-val> 
    </struct-element> 
- <struct-element fieldid="svc_date"> 
    <utc-val>1251417512</utc-val> 
    </struct-element> 
- <struct-element fieldid="bootversion"> 
    <string-val>V2_6_2_20071031_1658</string-val> 
    </struct-element> 
- <struct-element fieldid="apcaosversion"> 
    <string-val>apc_bw02_aos_262.bin</string-val> 
    </struct-element> 
    </struct-val> 
    </metadata> 
- <metadata slotid="nbLocationData" isclassdef="yes"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbSerialNum"> 
    <string-val>00:02:D3:03:5D:F7</string-val> 
    </metadata> 
- <metadata slotid="nbEncNBCIcon"> 
    <string-val>wall420_all.png</string-val> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="NetBotz 420">NetBotz 420</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Disconnected%}">Disconnected</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Error%}">Error</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Normal%}">Normal</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0" guid="B035DF7_nbHawkEnc_0" class="nbHawkEnc" 
classpath="/nbEnclosure/nbUSBEnclosure/nbHawkEnc"> 
    <u32-val>2</u32-val> 
- <metadata slotid="nbDockedToEncID"> 
    <varid-val>nbBaseEnclosure</varid-val> 
    </metadata> 
- <metadata slotid="nbEncMenuIcons" isclassdef="yes"> 
- <string-list-val> 
    <string-val>menu_link_pod_unplug.gif</string-val> 
    <string-val>menu_link_pod_error.gif</string-val> 
    <string-val>menu_link_pod.gif</string-val> 
    </string-list-val> 
    </metadata> 
- <metadata slotid="nbLocationData" isclassdef="yes"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbSerialNum"> 
    <string-val>SENSOR_00:02:D3:03:5D:F7</string-val> 
    </metadata> 
- <metadata slotid="nbEncNBCIcon" isclassdef="yes"> 
    <string-val>sensor_pod.png</string-val> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="%{|Sensor Pod%}">Sensor Pod</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Disconnected%}">Disconnected</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Error%}">Error</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Normal%}">Normal</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbEyeEnc_0" guid="B035DF7_nbEyeEnc_0" class="nbEyeEnc" 
classpath="/nbEnclosure/nbUSBEnclosure/nbEyeEnc"> 
    <u32-val>2</u32-val> 
- <metadata slotid="nbDockedToEncID"> 
    <varid-val>nbBaseEnclosure</varid-val> 
    </metadata> 
- <metadata slotid="nbEncMenuIcons" isclassdef="yes"> 
- <string-list-val> 
    <string-val>menu_link_camera_unplug.gif</string-val> 
    <string-val>menu_link_camera_error.gif</string-val> 
    <string-val>menu_link_camera.gif</string-val> 
    </string-list-val> 
    </metadata> 
- <metadata slotid="nbLocationData" isclassdef="yes"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbSerialNum"> 
    <string-val>CAMERA_00:02:D3:03:5D:F7</string-val> 
    </metadata> 
- <metadata slotid="nbEncNBCIcon" isclassdef="yes"> 
    <string-val>camera_pod.png</string-val> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="%{nbMsg|Camera|%}">Camera</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Disconnected%}">Disconnected</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Error%}">Error</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Normal%}">Normal</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbIPInterface_eth0_status" guid="B035DF7_nbIPInterface_eth0_status" 
class="nbIPInterfaceStatus" classpath="/nbIPInterfaceStatus"> 
- <struct-val> 
- <struct-element fieldid="enable"> 
    <bool-val val="false" /> 
    </struct-element> 
- <struct-element fieldid="hostname"> 
    <string-val /> 
    </struct-element> 
- <struct-element fieldid="ip"> 
    <string-val /> 
    </struct-element> 
- <struct-element fieldid="subnet"> 
    <string-val /> 
    </struct-element> 
- <struct-element fieldid="gateway"> 
    <string-val /> 
    </struct-element> 
+ <struct-element fieldid="usedhcp"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="linkisup"> 
    <bool-val val="false" /> 
    </struct-element> 
    </struct-val> 
    </variable> 
- <variable varid="nbWirelessIPInterface_wlan0_status"  
guid="B035DF7_nbWirelessIPInterface_wlan0_status" class="nbIPInterfaceStatus" 
classpath="/nbIPInterfaceStatus"> 
- <struct-val> 
- <struct-element fieldid="enable"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="hostname"> 
    <string-val>thm-netbotz</string-val> 
    </struct-element> 
- <struct-element fieldid="ip"> 
    <string-val>10.0.1.7</string-val> 
    </struct-element> 
- <struct-element fieldid="subnet"> 
    <string-val>255.255.255.128</string-val> 
    </struct-element> 
- <struct-element fieldid="gateway"> 
    <string-val>10.0.1.8</string-val> 
    </struct-element> 
- <struct-element fieldid="usedhcp"> 
    <bool-val val="false" /> 
    </struct-element> 
- <struct-element fieldid="leapsupport"> 
    <bool-val val="false" /> 
    </struct-element> 
- <struct-element fieldid="authsupport"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="linkisup"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="essid"> 
    <string-val>Sparta</string-val> 
    </struct-element> 
- <struct-element fieldid="mode"> 
    <u32-val>2</u32-val> 
    </struct-element> 
- <struct-element fieldid="channel"> 
    <u32-val>6</u32-val> 
    </struct-element> 
- <struct-element fieldid="frequency"> 
    <u32-val>2437000</u32-val> 
    </struct-element> 
- <struct-element fieldid="bit_rate"> 
    <u32-val>11000000</u32-val> 
    </struct-element> 
- <struct-element fieldid="link_stats_percent"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="link_quality"> 
    <u32-val>91</u32-val> 
    </struct-element> 
- <struct-element fieldid="link_level"> 
    <i32-val>39</i32-val> 
    </struct-element> 
- <struct-element fieldid="link_rating"> 
    <u32-val>3</u32-val> 
    </struct-element> 
- <struct-element fieldid="access_point"> 
    <octet-val>00259CAD7579</octet-val> 
    </struct-element> 
    </struct-val> 
    </variable> 
- <variable varid="nbConfigUpdTime" guid="B035DF7_nbConfigUpdTime"  
class="nbConfigUpdTimeCls" classpath="/nbConfigUpdTimeCls"> 
    <utc-val>1351782846</utc-val> 
    </variable> 
- <variable varid="nbPeriodicHTTP" class="nbPeriodicReportHTTP"  
classpath="/nbPeriodicReport/nbPeriodicReportHTTP"> 
- <struct-val> 
- <struct-element fieldid="enable"> 
    <bool-val val="true" /> 
    </struct-element> 
- <struct-element fieldid="url_0"> 
    <string-val>https://tsdevel.therascan.net/scan/main/netbotz.php</string-val> 
    </struct-element> 
- <struct-element fieldid="userid_0"> 
    <string-val>amcare</string-val> 
    </struct-element> 
- <struct-element fieldid="password_0"> 
    <password-val /> 
    </struct-element> 
- <struct-element fieldid="url_1"> 
    <string-val>http://</string-val> 
    </struct-element> 
- <struct-element fieldid="userid_1"> 
    <string-val /> 
    </struct-element> 
- <struct-element fieldid="password_1"> 
    <password-val /> 
    </struct-element> 
- <struct-element fieldid="secopt"> 
    <u32-val>0</u32-val> 
    </struct-element> 
- <struct-element fieldid="schedule"> 
    <string-val>0 0 0 0 0 0 0</string-val> 
    </struct-element> 
- <struct-element fieldid="interval"> 
    <u32-val>900</u32-val> 
    </struct-element> 
- <struct-element fieldid="incpix"> 
    <bool-val val="false" /> 
    </struct-element> 
- <struct-element fieldid="sensorprio"> 
    <i32-val>30</i32-val> 
    </struct-element> 
    </struct-val> 
- <metadata slotid="nbLastReportSuccessful"> 
    <bool-val val="true" /> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="Periodic HTTP Report">Periodic HTTP Report</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbLinkStatus_eth0" guid="B035DF7_nbLinkStatus_eth0"  
class="nbLinkStatusSnr"  
classpath="/nbSensor/nbStateSensor/nbBoolSensor/nbLinkStatusSnr"> 
    <u32-val>0</u32-val> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbBaseEnclosure</varid-val> 
    </metadata> 
- <metadata slotid="nbLocationData" isclassdef="yes"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="%{|Ethernet Link Status%}">Ethernet Link Status</nls-string- 
val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Down%}">Down</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Up%}">Up</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbLinkStatus_wlan0" guid="B035DF7_nbLinkStatus_wlan0"  
class="nbLinkStatusSnr"  
classpath="/nbSensor/nbStateSensor/nbBoolSensor/nbLinkStatusSnr"> 
    <u32-val>1</u32-val> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbBaseEnclosure</varid-val> 
    </metadata> 
- <metadata slotid="nbLocationData" isclassdef="yes"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="%{|Wireless Link Status %s|wlan0%}">Wireless Link Status 
wlan0</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Down%}">Down</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Up%}">Up</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbEyeEnc_0_CMOT" guid="B035DF7_nbEyeEnc_0_CMOT" class="nbCamMotSnr" 
classpath="/nbSensor/nbStateSensor/nbBoolSensor/nbCamMotSnr"> 
    <u32-val>0</u32-val> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbEyeEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLocationData"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Camera Motion%}">Camera Motion</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|No Motion%}">No Motion</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Motion Detected%}">Motion Detected</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbEyeEnc_0_DOOR" guid="B035DF7_nbEyeEnc_0_DOOR" 
class="nbDoorSensor" classpath="/nbSensor/nbStateSensor/nbBoolSensor/nbDoorSensor"> 
    <u32-val isnull="yes" /> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbEyeEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLocationData"> 
    <struct-val /> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Door Switch%}">Door Switch</nls-string-val> 
    </metadata> 
- <metadata slotid="nbEnum" isclassdef="yes"> 
- <nls-string-list-val> 
    <nls-string-val raw="%{nbMsg|Open%}">Open</nls-string-val> 
    <nls-string-val raw="%{nbMsg|Closed%}">Closed</nls-string-val> 
    </nls-string-list-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0_DEW" guid="B035DF7_nbHawkEnc_0_DEW"  
class="nbDewPointSensor" classpath="/nbSensor/nbNumSensor/nbDewPointSensor"> 
    <double-val>11.300000</double-val> 
- <metadata slotid="nbUnitsID" isclassdef="yes"> 
    <varid-val>nbUnits_DegC</varid-val> 
    </metadata> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbHawkEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Dew Point%}">Dew Point</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0_AUDI" guid="B035DF7_nbHawkEnc_0_AUDI" 
class="nbAudioSensor" classpath="/nbSensor/nbNumSensor/nbAudioSensor"> 
    <double-val>2.000000</double-val> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbHawkEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Audio%}">Audio</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0_AFLW" guid="B035DF7_nbHawkEnc_0_AFLW"  
class="nbAirflowSensor" classpath="/nbSensor/nbNumSensor/nbAirflowSensor"> 
    <double-val>22.859994</double-val> 
- <metadata slotid="nbUnitsID" isclassdef="yes"> 
    <varid-val>nbUnits_MetersPerMinute</varid-val> 
    </metadata> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbHawkEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Air Flow%}">Air Flow</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0_HUMI" guid="B035DF7_nbHawkEnc_0_HUMI" 
class="nbHumidSensor" classpath="/nbSensor/nbNumSensor/nbHumidSensor"> 
    <double-val>39.000000</double-val> 
- <metadata slotid="nbUnitsID" isclassdef="yes"> 
    <varid-val>nbUnits_PctRH</varid-val> 
    </metadata> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbHawkEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Humidity%}">Humidity</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbHawkEnc_0_TEMP" guid="B035DF7_nbHawkEnc_0_TEMP" 
class="nbTempSensor" classpath="/nbSensor/nbNumSensor/nbTempSensor"> 
    <double-val>26.400000</double-val> 
- <metadata slotid="nbUnitsID" isclassdef="yes"> 
    <varid-val>nbUnits_DegC</varid-val> 
    </metadata> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbHawkEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel" isclassdef="yes"> 
    <nls-string-val raw="%{nbMsg|Temperature%}">Temperature</nls-string-val> 
    </metadata> 
    </variable> 
- <variable varid="nbEyeEnc_0_CAMERA" guid="B035DF7_nbEyeEnc_0_CAMERA" 
class="nbEyeCamera" classpath="/nbCamera/nbEyeCamera"> 
- <struct-val> 
- <struct-element fieldid="motion"> 
    <u32-val>0</u32-val> 
    </struct-element> 
    </struct-val> 
- <metadata slotid="nbEncID"> 
    <varid-val>nbEyeEnc_0</varid-val> 
    </metadata> 
- <metadata slotid="nbLabel"> 
    <nls-string-val raw="" /> 
    </metadata> 
    </variable> 
    </variable-set>

來源

2012-12-08 IFimbres

你不能這樣做。所述的XMLIndex文件指出這是不允許的： http://docs.oracle.com/cd/E11882_01/appdev.112/e23094/xdb_indexing.htm#ADXDB4385

的路徑必須引用獨生子女和後代軸，並且它們必須測試僅元素和屬性節點或他們的名字（可能使用通配符）。特別是，路徑不能包含謂詞。

由於您感興趣的值在xml文檔中出現一次，您可以在其上創建一個常規索引。否則你必須索引所有「可變」路徑。

SQL> create index foo on netbotz(to_number(extractvalue(nbxml,'/variable-set/variable[@class="nbTempSensor"]/double-val'))); 

Index created. 

SQL> explain plan for select * from netbotz where to_number(extractvalue(nbxml,'/variable-set/variable[@class="nbTempSensor"]/double-val')) between 1 and 4; 

Explained. 

SQL> select * From table(dbms_xplan.display); 

Plan hash value: 992868181 

--------------------------------------------------------------------------------------- 
| Id | Operation     | Name | Rows | Bytes | Cost (%CPU)| Time  | 
--------------------------------------------------------------------------------------- 
| 0 | SELECT STATEMENT   |   |  1 | 2002 |  0 (0)| 00:00:01 | 
| 1 | TABLE ACCESS BY INDEX ROWID| NETBOTZ |  1 | 2002 |  0 (0)| 00:00:01 | 
|* 2 | INDEX RANGE SCAN   | FOO  |  1 |  |  0 (0)| 00:00:01 | 
---------------------------------------------------------------------------------------

來源

2012-12-08 18:36:29 DazzaL

謝謝你的解釋，簡潔明瞭。我們能夠按照描述創建索引。 – IFimbres

Oracle xmltype列，創建包含以下路徑的xmlindex

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