Have a look at v$thread. Ex: select instance,thread# from v$thread; Cheers, L. ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Manmohan Jalsingh Sent: Tuesday, May 08, 2007 11:47 PM To: Guang Mei Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Logfiles in RAC database Guang, The gv$log view is listing all threads for both instances. That's what I found confusing. It would be nice if the view had a column to indicate which thread is actually mounted to a particular instance. Thanks Manmohan On 5/8/07, Guang Mei <GuangMei@xxxxxxx> wrote: No, each instance has it's own thread#. From my 2-node rac db: SQL> select INST_ID,THREAD# from gv$log; INST_ID THREAD# ---------- ---------- 1 1 1 1 1 2 1 2 2 1 2 1 2 2 2 2 8 rows selected. Guang ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Manmohan Jalsingh Sent: Tuesday, May 08, 2007 4:28 PM To: Bradd Piontek Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Logfiles in RAC database Thanks. Looks like I have to specify both inst_id and thread# on join between gv$logfile and gv$log. Any idea why just one of them is not enough. Isn't instance #1 should means thread#1 and instance#2 means thread#2. May be I am missing something. <snip> -- //www.freelists.org/webpage/oracle-l