plsql - Using ExtractValue and XMLType in MAterialized view -

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i'm trying create materialized view present tabular view on xml data contained in table. hoping use auto refresh option ensure mv date.

some background: oracle 10.2

table def:

create table agreementextensiondata (     agreementextensiondataid  number(18)          not null,     extensiondata             nclob,       agreementid               number(18)          not null)

example of extensiondata:

<extensions>   <extensiondata id="2" name="includeportfolio" type="4">true</extensiondata> </extensions>

i have create log on table:

create materialized view log on agreementextensiondata nocache logging noparallel primary key including new values;

i trying create following mv:

create materialized view mv_extagreements refresh fast on commit enable query rewrite select agreementextensiondataid,        agreementid,        extractvalue(xmltype(extensiondata), '/extensions/extensiondata[@id=''1'']') agreementextensiondata /

but following message:

 ora-30373: object data types not supported in context

i saw post suggesting use function extract values xml, not work either:

create or replace function extractvarchar2extension(p_xml in clob, in_number in varchar2)  return varchar2 deterministic     begin      return xmltype(p_xml).extract('/extensions/extensiondata[@id=''' || in_number ||  ''']/text()').getstringval(); end; /

but following statement fails:

select extractvarchar2extension(extensiondata,'2') agreementextensiondata      agreementid = 136 
 ora-00600: internal error code, arguments: [kghsccread1], [128], [0], [], [], [], [], [] ora-06512: @ "sys.xmltype", line 254 ora-06512: @ "algov5.extractvarchar2extension", line 5

??

any guidance welcome, maybe using wrong set of tools here.

thanks

change p_xml in clob p_xml in nclob.


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