Problem with standby, Can't identify FAL client
Hello!
I have primary and standby DB (10.2.0.1, primary on OEL5.3 x64, standby on OEL5.3 itanium)
Almost all is fine, but sometimes i've this issue:
FAL[server]: Can't identify FAL client, null string supplied
ORA-07445: exception encountered: core dump [<0x3f4b370560>] [SIGSEGV] [Address not mapped to object] [0x403FE6D3A60] [] []
Piece of primary's alert log:
Thu Mar 25 15:00:30 2010
Thread 1 cannot allocate new log, sequence 30980
Private strand flush not complete
Current log# 4 seq# 30979 mem# 0: /sdd/oradata/a10/redo04a.log
Current log# 4 seq# 30979 mem# 1: /sdc/oradata/a10/redo04b.log
Thread 1 advanced to log sequence 30980
Current log# 5 seq# 30980 mem# 0: /sdd/oradata/a10/redo05a.log
Current log# 5 seq# 30980 mem# 1: /sdc/oradata/a10/redo05b.log
Thu Mar 25 15:00:37 2010
FAL[server]: Can't identify FAL client, null string supplied
Thu Mar 25 15:00:37 2010
Errors in file /app/oracle/admin/a10/udump/a10_fal_957.trc:
ORA-07445: exception encountered: core dump [<0x3f4b370560>] [SIGSEGV] [Address not mapped to object] [0x403FE6D3A60] [] []
Thu Mar 25 15:00:47 2010
ARC3: Standby redo logfile selected for thread 1 sequence 30979 for destination LOG_ARCHIVE_DEST_3
Piece of a10_fal_957.trc:
FAL Redo Shipping Client Did Not Establish Network Login
Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x403fe6d3a60, PC: [0x3f4b370560, Cannot find s$
<0x3f4b370560>]
Primary's settings:
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
fal_client string a10sb
fal_server
log_archive_config string
log_archive_dest_3 string service=a10sb
log_archive_dest_state_3 string ENABLE
log_archive_format string %t_%s_%r.dbf
Piece of standby's alert log:
Media Recovery Waiting for thread 1 sequence 30979
Thu Mar 25 15:03:03 2010
Fetching gap sequence in thread 1, gap sequence 30979-30979
FAL[client, MRP0]: Error 3113 fetching archived redo log from a10
Thu Mar 25 15:03:04 2010
Errors in file /app/oracle/admin/a10sb/bdump/a10sb_mrp0_15411.trc:
ORA-03113: end-of-file on communication channel
Thu Mar 25 15:03:13 2010
RFS[6]: Successfully opened standby log 1: '/sdd/oradata/a10sb/redo01a.log'
Thu Mar 25 15:03:34 2010
Recovery of Online Redo Log: Thread 1 Group 1 Seq 30979 Reading mem 0
Mem# 0 errs 0: /sdd/oradata/a10sb/redo01a.log
Mem# 1 errs 0: /sda/a10sb/redologs/redo01b.log
Thu Mar 25 15:05:03 2010
Media Recovery Waiting for thread 1 sequence 30980
Standby's settings:
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
fal_client
fal_server string a10
What's going on?
Why does "FAL Redo Shipping Client Did Not Establish Network Login" occur?
And how can I resolve without pathing?
Big thanks!
Dmitry