The index name shows that this is the LOBINDEX. Each out of line LOB item is broken into CHUNKs, and a bitmap in the LOB (DATA) SEGMENT is used to map where in the SEGMENT there are free spaces that can take the CHUNKS, but there is also a LOBINDEX stored in the same tablespace that links together all the CHUNKS for a single LOB item.
Because of the way Oracle handles read-consistency of LOBs by versioning the LOBINDEX whilst leaving the data in place (until roughly PCTVERSION of the segment's current storage is holding old data), it is necessary for a 'convert to null' of a LOB to add entries to the LOBINDEX. Regards Jonathan Lewis http://www.jlcomp.demon.co.uk Now available One-day tutorials: Cost Based Optimisation Trouble-shooting and Tuning Indexing Strategies (see http://www.jlcomp.demon.co.uk/tutorial.html ) ____UK_______April 8th ____UK_______April 22nd ____Denmark May 21-23rd ____USA_(FL)_May 2nd Next dates for the 3-day seminar: (see http://www.jlcomp.demon.co.uk/seminar.html ) ____UK_(Manchester)_May ____USA_(CA, TX)_August The Co-operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: 19 March 2003 21:36 > We've been testing a new application in development using CLOBS. The > developer contacted me with following error: > > 1]: (Error): ORA-01654: unable to extend index > YURIY.SYS_IL0000185466C00023$$ by 256 in tablespace TS_EMAIL_CLOB > > The odd things here are that > > a) It occurred while updating the CLOB column to null (why would setting > something to null *increase* the size of an index?) > b) The named index does not exist (implying it was something Oracle might > have created on the fly?) > > I increased the tablespace size and the problem went away but I'm trying to > figure out what happened. > > The tablespace is one assigned to the CLOB segment. > Oracle 8.1.7.2 > Solaris 2.6 > > Thanks, > Jay Miller > x48355 > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jonathan Lewis INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
