Oracle Text Error - 50935

Question

Hi
I randomly get following error while searching my database using context index:
ORA-29902: error in executing ODCIIndexStart() routine
ORA-20000: Oracle Text error:
DRG-00100: internal error, arguments : [50935],[drpn.c],[992],[],[]
DRG-00100: internal error, arguments : [50935],[drpnw.c],[600],[],[]
DRG-00100: internal error, arguments : [51002],[drwa.c],[573],[],[]
DRG-00100: internal error, arguments : [51028],[drwaf.c],[795],[204],[AUTOMOBILE]
DRG-00100: internal error, arguments : [50401],[dreb.c],[1037],[],[]
ORA-03113: end-of-file on communication channelIf I search again using the same keywords, it does not return the error.
The frequency of this error is low - around 50 out of around 50,000 searches in a day.
Please advise what should I do?
Regards
Madhup

Answer 1

Hi,
Version= Oracle 10g Release 10.2.0.1.0
OS= Linux (Redhat 4.0)
Language= English (100% documents that are indexed are in English Language)
similarly the search is in English Language
The contains clause looks like shown below:
               (automobile frames in china)*10,
               ($automobile $frames $in $china)*7,
               (NEAR((automobile,frames,in,china)))*4,
               (NEAR(($automobile,$frames,$in,$china)))*3,
               (automobile% frames% in% china%)*3
          ) within sec_a
     )*1,
               (automobile frames in china)*10,
               ($automobile $frames $in $china)*7,
               (NEAR((automobile,frames,in,china)))*4,
               (NEAR(($automobile,$frames,$in,$china)))*3,
               (automobile% frames% in% china%)*3,
               (FUZZY(automobile,,,WEIGHT) FUZZY(frames,,,WEIGHT) FUZZY(in,,,WEIGHT) FUZZY(china,,,WEIGHT))*2
          ) within sec_b
     )*1,
               (automobile frames in china)*10,
               ($automobile $frames $in $china)*7,
               (NEAR((automobile,frames,in,china)))*4
          ) within sec_c
     )*1,
               (automobile frames in china)*10,
               ($automobile $frames $in $china)*7,
               (NEAR((automobile,frames,in,china)))*4
          ) within sec_d
     )*.1
)I am using a Multi Column Datastore that has 6 columns
each of these 6 columns has been setup as a field section so that I can search within it separately.
My index preferences are as mentioned below:
BEGIN
     CTX_DDL.DROP_PREFERENCE('CTXSYS.IIL_LEXER');
     CTX_DDL.CREATE_PREFERENCE('CTXSYS.IIL_LEXER','BASIC_LEXER');
                CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_LEXER', 'INDEX_STEMS', 'ENGLISH');
     CTX_DDL.DROP_PREFERENCE('CTXSYS.IIL_FUZZY_PREF');
     CTX_DDL.CREATE_PREFERENCE('CTXSYS.IIL_FUZZY_PREF', 'BASIC_WORDLIST'); 
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','FUZZY_MATCH','ENGLISH'); 
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','FUZZY_SCORE','60'); 
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','FUZZY_NUMRESULTS','100'); 
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','SUBSTRING_INDEX','TRUE');
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','PREFIX_INDEX','TRUE');
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','PREFIX_MIN_LENGTH','1');
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','PREFIX_MAX_LENGTH','3');
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','WILDCARD_MAXTERMS','15000');
     CTX_DDL.SET_ATTRIBUTE('CTXSYS.IIL_FUZZY_PREF','STEMMER','ENGLISH'); 
END;Regards
Madhup