Hi all, I'm confuse with Segment Header and Data file header.
some said LMT keep the free block information (bitmap) in Segment header and some said Data file header. I have 3 questions 1. where oracle keep LMT bitmap each data file header or each segment header ? 2a. if it is store in data file header can one tell whether is LMT or DMT by view (first line) of the physical file ? 2b. if it is stored in segment header which view of base tables store these information. 3. What is ST enqueue ? Thanks Sinardy -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Sinardy Xing INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).