why the archived log of thread 1 was sometimes generated under the archive destination of thread 2 ?
Our environment is a 2-node RAC, sometimes I find that the information of archiving redolog of thread 1 is recorded in alert.log of thread 2.
For example,following information can be seen from the thread 2's alert.log :
Tue Aug 18 03:28:17 2015
Archived Log entry 343061 added for thread 1 sequence 202057 ID 0x24c8e4e9 dest 1
And the archived log which has sequence #202057 is created under the archive destination of thread 2.
---query on v$archived_log : thread#!=ARCHIVAL_THREAD#
select sequence#,thread#,archival_thread# from v$archived_log where creator='FGRD' and thread#=1
SEQUENCE# THREAD# ARCHIVAL_THREAD#
--------------- -------- --------------------
202057 1 2
Any document or URLs which can explain this behaviour? I have spent much time to search on the web but did not get any valueable findings.