Comments in line On 01/26/2004 01:46:25 PM, Barbara Baker wrote: > Hi, list. > Solaris 9 > Oracle 188.8.131.52 > > I have been trying for several days to update a field > in one table (pub) from a field in another table > (pub_14) > The table I'm updating FROM (pub_14) has about 500,000 > rows in it. > The table I'm updating (pub) has about 18,000,000 rows > in it. > > I'm on about my 5th attempt. The current version has > been running for 38 hours. So far I believe I've > managed to update about 500 records. > > The tables originally were identical in structure, but > 1 came from another database. To eliminate link > issues, I created a new table (pub_14) with just the 5 > fields I need. > > Both tables have an index on these 3 columns (adno, > pubno, vno). I've analyzed both tables. The cost is > lower with the hints I've provided, but I don't really > think it makes any difference. > > I turned on 10046 level 12 for the current process (38 > hour one). In just a few minutes of tracing, I see > bunches of executes, but no updates. Why did you turn 10046 on? The information that you've produced could have been produced by a simple SQL_TRACE. The event 10046 should have run with the level set to 10 or 12 and tkprof should have been done with waits=yes sys=yes sort=\(exeela\) > > Any ideas? Errr, no, not so far. Did you monitor V$SESSION_EVENT and see what is your session waiting for? If it's waiting for a disk read, did you check where do the blocks you get as P2 belong? Is it an index block, data block, undo segment?