打开数据库的时候遇到ORA-01092: ORACLE instance terminated. Disconnection forced错误，查看alert日志内容如下：
Tue Nov 15 15:47:39 2011
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Picked latch-free SCN scheme 2
Using LOG_ARCHIVE_DEST_10 parameter default value as USE_DB_RECOVERY_FILE_DEST
Autotune of undo retention is turned on.
IMODE=BR
ILAT =18
LICENSE_MAX_USERS = 0
SYS auditing is disabled
ksdpec: called for event 13740 prior to event group initialization
Starting up ORACLE RDBMS Version: 10.2.0.1.0.
System parameters with non-default values:
processes = 150
cpu_count = 2
__shared_pool_size = 188743680
__large_pool_size = 4194304
__java_pool_size = 4194304
__streams_pool_size = 0
sga_target = 591396864
control_files = /u01/app/oracle/oradata/orcl/control02.ctl, /u01/app/oracle/oradata/orcl/control03.ctl
db_block_size = 8192
__db_cache_size = 385875968
compatible = 10.2.0.1.0
db_file_multiblock_read_count= 8
db_recovery_file_dest = /u01/app/oracle/flash_recovery_area/
db_recovery_file_dest_size= 2147483648
undo_management = AUTO
undo_tablespace = UNDOTBS1
remote_login_passwordfile= EXCLUSIVE
db_domain =
dispatchers = (PROTOCOL=TCP) (SERVICE=orclXDB)
job_queue_processes = 10
background_dump_dest = /u01/app/oracle/admin/orcl/bdump
user_dump_dest = /u01/app/oracle/admin/orcl/udump
core_dump_dest = /u01/app/oracle/admin/orcl/cdump
audit_file_dest = /u01/app/oracle/admin/orcl/adump
db_name = orcl
open_cursors = 300
pga_aggregate_target = 196083712
PSP0 started with pid=3, OS id=2796
PMON started with pid=2, OS id=2794
MMAN started with pid=4, OS id=2798
DBW0 started with pid=5, OS id=2800
LGWR started with pid=6, OS id=2802
CKPT started with pid=7, OS id=2804
SMON started with pid=8, OS id=2806
RECO started with pid=9, OS id=2808
CJQ0 started with pid=10, OS id=2810
MMON started with pid=11, OS id=2812
Tue Nov 15 15:47:41 2011
starting up 1 dispatcher(s) for network address '(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))'...
MMNL started with pid=12, OS id=2814
Tue Nov 15 15:47:41 2011
starting up 1 shared server(s) ...
Tue Nov 15 15:47:42 2011
ALTER DATABASE MOUNT
Tue Nov 15 15:47:46 2011
Setting recovery target incarnation to 2
Tue Nov 15 15:47:46 2011
Successful mount of redo thread 1, with mount id 1295059870
Tue Nov 15 15:47:46 2011
Database mounted in Exclusive Mode
Completed: ALTER DATABASE MOUNT
Tue Nov 15 15:47:53 2011
alter database open
Tue Nov 15 15:47:53 2011
Beginning crash recovery of 1 threads
parallel recovery started with 2 processes
Tue Nov 15 15:47:53 2011
Started redo scan
Tue Nov 15 15:47:54 2011
Completed redo scan
1 redo blocks read, 0 data blocks need recovery
Tue Nov 15 15:47:54 2011
Started redo application at
Thread 1: logseq 14, block 2, scn 735161
Tue Nov 15 15:47:54 2011
Recovery of Online Redo Log: Thread 1 Group 1 Seq 14 Reading mem 0
Mem# 0 errs 0: /u01/app/oracle/oradata/orcl/redo01.log
Mem# 1 errs 0: /u01/app/oracle/oradata/orcl/redo01b.log
Tue Nov 15 15:47:54 2011
Completed redo application
Tue Nov 15 15:47:54 2011
Completed crash recovery at
Thread 1: logseq 14, block 3, scn 755163
0 data blocks read, 0 data blocks written, 1 redo blocks read