With Indexes, you can join dba_objects with sys.ind$ to determine if an index name is system generated or not. These two lines work with sys.ind$ -- however lob indexes do not appear to exist in this table. I'm trying to do the same thing with LOB Indexes. A LOB index does not show up in dba_objects, but I was trying kind of the same thing decode(bitand(sys.ind$.property,4096), 4096, 'YES', 'NO') SYS_GENERATED, decode(bitand(sys.ind$.property,1), 1, 'YES', 'NO') unique_index With LOB indexes, the INDEX is not listed in dba_objects either, so I have tried to query using sys.lob$, and others tables directly (as opposed to dba_lobs), this is shown below. However, I am not even sure if I can bitand the answer, Can anyone contribute? All the combinations of bitands result in all yes or all no which does not make sense for me considering I certainly appears that I have one - as shown in the results. (LOB INDEXES Not in DBA_OBJECTS) select * from dba_segments where segment_name = 'LOB_EXPLICIT_MESSAGE_LOB_IX'; SEGMENT_NAME ---------------------------------------- LOB_EXPLICIT_MESSAGE_LOB_IX select * from dba_indexes where index_name = 'LOB_EXPLICIT_MESSAGE_LOB_IX'; INDEX_NAME INDEX_TYPE TABLE_NAME ------------------------------ --------------------------- ------------------ LOB_EXPLICIT_MESSAGE_LOB_IX LOB LOB_EXPLICIT select * from dba_objects where object_name = 'LOB_EXPLICIT_MESSAGE_LOB_IX'; no rows selected select * from user_lobs where index_name = 'LOB_EXPLICIT_MESSAGE_LOB_IX'; TABLE_NAME COLUMN_NAME SEGMENT_NAME TABLESPACE_NAME INDEX_NAME -------------------- ------------ ------------------------------ ------------------------------ ------------------------------ -- LOB_EXPLICIT MESSAGE LOB_EXPLICIT_MESSAGE_LOB_SG TOOLS LOB_EXPLICIT_MESSAGE_LOB_IX column name format a30 column property format 999999999999 select o.name table_name, io.name index_name, decode(bitand(l.property, 4096), 4096, 'YES', 'NO') sys_generated, l.property, decode(bitand(l.property,2), 2, 'YES', 'NO') bitand_2, decode(bitand(l.property,1), 1, 'YES', 'NO') unique_index, lo.name segment_name, decode(bitand(c.property, 1), 1, ac.name, c.name) column_name from sys.obj$ o, sys.obj$ lo, sys.obj$ io, sys.ts$ ts, sys.ts$ ts1, sys.lob$ l, sys.user$ u, sys.attrcol$ ac, sys.col$ c where o.owner# = u.user# and bitand(o.flags, 128) = 0 and o.obj# = c.obj# and c.obj# = l.obj# and c.intcol# = l.intcol# and l.lobj# = lo.obj# and l.ind# = io.obj# and l.ts# = ts.ts#(+) and u.tempts# = ts1.ts# and c.obj# = ac.obj#(+) and u.name = USER and o.name in ('LOB_WITHCLAUSE','LOB_NOCLAUSE','LOB_EXPLICIT') and o.obj# = l.obj# / TABLE_NAME INDEX_NAME SYS_GENERATED PROPERTY BIT UNIQUE SEGMENT_NAME COLUMN_NAME ------------------------------ ------------------------------ ------------- ------------- --- ------ ------------------------------ ------------ LOB_EXPLICIT LOB_EXPLICIT_MESSAGE_LOB_IX NO 2 YES NO LOB_EXPLICIT_MESSAGE_LOB_SG MESSAGE LOB_NOCLAUSE SYS_IL0000575648C00004$$ NO 2 YES NO SYS_LOB0000575648C00004$$ MESSAGE LOB_WITHCLAUSE LOB_WITHCLAUSE_MESSAGE_LOB_IX NO 2 YES NO LOB_WITHCLAUSE_MESSAGE_LOB_SG MESSAGE Have a nice holiday weekend, See you next week, Joel Patterson Database Administrator 904 727-2546 -- //www.freelists.org/webpage/oracle-l