oracle连接无故断掉3次 昨晚到今天下午 process数和session数都没问题
正式服务器，昨天晚上，到今天下午，分别 1.昨晚10点左右；2.今早10点左右；3.今下午15:47左右，断掉3次，重启服务又好了。alert..log中没有什么错误，process数和session数都是够的，业务量也没有井喷，应用稳定运行了半年，没有修改过，应该也和应用连接是否关闭无关（应用中连接都是用完了会关的）磁盘空间也够，监听文件9.6M也不算大，自动归档也开了，也没有中毒，求高手指点。


SQL> show parameter processes

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes integer 0
db_writer_processes integer 3
gcs_server_processes integer 0
job_queue_processes integer 10
log_archive_max_processes integer 2
processes integer 900

SQL> select count(*) from v$process;

COUNT(*)
----------
222

SQL> show parameter session

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
java_max_sessionspace_size integer 0
java_soft_sessionspace_limit integer 0
license_max_sessions integer 0
license_sessions_warning integer 0
logmnr_max_persistent_sessions integer 1
session_cached_cursors integer 20
session_max_open_files integer 10
sessions integer 995
shared_server_sessions integer

SQL> select count(*) from v$session;

COUNT(*)
----------
168

SQL> show parameter cursor

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------
cursor_sharing string EXACT
cursor_space_for_time boolean FALSE
open_cursors integer 300
session_cached_cursors integer 20


SQL> select count(*) from v$open_cursor;

COUNT(*)
----------
2411 //2411 是累计所有用户的，那个一般问题不大


SQL> select name,log_mode from v$database;

NAME LOG_MODE
--------- ------------
AAAAAA ARCHIVELOG

SQL>

alert_...log(这里面三段SYS auditing is disabled都是一样的我截图下来了在下面):
Dump file d:\oracle\rdbms\trace\alert_orclyxkj.log
Tue Feb 19 15:44:49 2013
ORACLE V10.2.0.1.0 - 64bit Production vsnsta=0
vsnsql=14 vsnxtr=3
Windows Server 2003 Version V5.2 Service Pack 2
CPU : 24 - type 8664, 2 Physical Cores
Process Affinity : 0x0000000000000000
Memory (Avail/Total): Ph:22949M/24530M, Ph+PgF:25018M/25803M
Tue Feb 19 15:44:49 2013
Adjusting the default value of parameter parallel_max_servers
from 480 to 135 due to the value of parameter processes (150)
Tue Feb 19 15:44:49 2013
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Shared memory segment for instance monitoring created
Picked latch-free SCN scheme 3
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
Dump file d:\oracle\rdbms\trace\alert_orclyxkj.log
Wed Feb 20 11:01:22 2013
ORACLE V10.2.0.1.0 - 64bit Production vsnsta=0
vsnsql=14 vsnxtr=3
Windows Server 2003 Version V5.2 Service Pack 2
CPU : 24 - type 8664, 2 Physical Cores
Process Affinity : 0x0000000000000000
Memory (Avail/Total): Ph:23417M/24530M, Ph+PgF:24659M/25803M
Wed Feb 20 11:01:22 2013
Adjusting the default value of parameter parallel_max_servers
from 480 to 135 due to the value of parameter processes (150)
Wed Feb 20 11:01:22 2013
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Picked latch-free SCN scheme 3

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
Dump file d:\oracle\rdbms\trace\alert_orclyxkj.log
Thu Feb 21 20:22:16 2013
ORACLE V10.2.0.1.0 - 64bit Production vsnsta=0
vsnsql=14 vsnxtr=3
Windows Server 2003 Version V5.2 Service Pack 2
CPU : 24 - type 8664, 2 Physical Cores
Process Affinity : 0x0000000000000000
Memory (Avail/Total): Ph:23435M/24530M, Ph+PgF:24667M/25803M
Thu Feb 21 20:22:16 2013
Adjusting the default value of parameter parallel_max_servers
from 480 to 135 due to the value of parameter processes (150)
Thu Feb 21 20:22:16 2013
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Picked latch-free SCN scheme 3
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


oracle connction session
[解决办法]
断掉3次，
Tue Feb 19 15:44:49 2013
Starting ORACLE instance (normal)
Wed Feb 20 11:01:22 2013
Starting ORACLE instance (normal)
Thu Feb 21 20:22:16 2013
Starting ORACLE instance (normal)
==================================
这是手工重启服务的时间吗？

远程断掉时，服务器本地能否登陆？