Sorry for the previous mail, the database version is 9205, not 9204. Previous mail as below. Hi, all: My test env is oracle9204 on Solaris 8 for sparc. I unplugged standby network and checked primary's alertlog, I found even I set MAX_FAILURE=3D2 REOPEN=3D10, primary still keep checking wheather it can post redo data to standby and this check time always last for 15 seconds (NET_TIMEOUT's value?). But oracle online doc said, it should be check 2 times and will stopped until reset the error status in v$archive_dest_status view. What's wrong with my test? or just the bug of Oracle. Thu Jan 20 12:11:47 2005 ALTER SYSTEM SET log_archive_dest_3=3D'SERVICE=3DCTSDB.STANDBY LGWR ASYNC= =3D20480 NET_TIMEOUT=3D15 MAX_FAILURE=3D2 REOPEN=3D10' SCOPE=3DBOTH; Thu Jan 20 12:11:48 2005 Thread 1 cannot allocate new log, sequence 905 Checkpoint not complete Current log# 3 seq# 904 mem# 0: /oradata/ctsdb/redo03.log Creating archive destination LOG_ARCHIVE_DEST_3: 'CTSDB.STANDBY' =2E... Thu Jan 20 12:12:19 2005 Creating archive destination LOG_ARCHIVE_DEST_3: 'CTSDB.STANDBY' LNS2 started with pid=3D16 Thu Jan 20 12:12:35 2005 LGWR received timedout error from KSR =2E... Thu Jan 20 12:12:46 2005 Thread 1 cannot allocate new log, sequence 911 Checkpoint not complete Current log# 3 seq# 910 mem# 0: /oradata/ctsdb/redo03.log Creating archive destination LOG_ARCHIVE_DEST_3: 'CTSDB.STANDBY' LNS3 started with pid=3D20 Thu Jan 20 12:13:04 2005 LGWR received timedout error from KSR No action necessary. ARCH will attempt to transmit log file LGWR: Error 2 creating archivelog file 'CTSDB.STANDBY' =2E... Thu Jan 20 12:13:15 2005 Thread 1 cannot allocate new log, sequence 914 Checkpoint not complete Current log# 3 seq# 913 mem# 0: /oradata/ctsdb/redo03.log Creating archive destination LOG_ARCHIVE_DEST_3: 'CTSDB.STANDBY' LNS4 started with pid=3D21 Thu Jan 20 12:13:33 2005 LGWR received timedout error from KSR No action necessary. ARCH will attempt to transmit log file LGWR: Error 2 creating archivelog file 'CTSDB.STANDBY' =2E... Thu Jan 20 12:13:45 2005 Creating archive destination LOG_ARCHIVE_DEST_3: 'CTSDB.STANDBY' LNS5 started with pid=3D22 Thu Jan 20 12:14:01 2005 LGWR received timedout error from KSR No action necessary. ARCH will attempt to transmit log file LGWR: Error 2 creating archivelog file 'CTSDB.STANDBY' =2E... --=20 Kamus <kamusis@xxxxxxxxx> =C4=C7=C3=B4=B6=E01G=B5=C4=D3=CA=CF=E4=A3=AC=CE=D2=C4=DC=D3=C3=C0=B4=B8=C9= =CA=B2=C3=B4:-) A Oracle8i & 9i Certified DBA from China -- //www.freelists.org/webpage/oracle-l