ORA-12537: TNS:connection closed

报错:ORA-12537: TNS:connection closed 。

环境:

Oracle:11.2.0.2

OS:LINUX 5.6

环境:RAC

NODE1:10.20.31.36

NODE2:10.20.31.38

[oracle@ract1 ~]$ sqlplussys/[email protected]:1521/racdbas sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Tue Jan 15 16:19:04 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.

ERROR:
ORA-12537: TNS:connection closed

使用同样的监听,,登陆ASM实例却可以

[oracle@ract1 ~]$ sqlplussys/[email protected]:1521/+ASMas sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Tue Jan 15 16:32:29 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options

SQL>


登陆到节点二也没问题

[oracle@ract1 ~]$ sqlplussys/[email protected]:1521/racdbas sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Tue Jan 15 16:33:46 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL>


监听的配置:

[oracle@ract1 admin]$ cat sqlnet.ora
# sqlnet.ora.ract1 Network Configuration File: /grid/product/11.2.0/network/admin/sqlnet.ora.ract1
# Generated by Oracle configuration tools.

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

ADR_BASE = /grid/app


#tcp.validnode_checking = yes


[oracle@ract1 admin]$ cat listener.ora
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
# listener.ora.ract1 Network Configuration File: /grid/product/11.2.0/network/admin/listener.ora.ract1
# Generated by Oracle configuration tools.

ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1 = ON

ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER = ON

LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER_SCAN1))
)
)

监听状态:

[oracle@ract1 ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 15-JAN-2013 16:40:42

Copyright (c) 1991, 2010, Oracle. All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 15-JAN-2013 16:06:59
Uptime 0 days 0 hr. 33 min. 43 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /grid/product/11.2.0/network/admin/listener.ora
Listener Log File /grid/app/diag/tnslsnr/ract1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.20.31.36)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.20.31.37)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "racdb" has 1 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Service "racdbXDB" has 1 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
The command completed successfully


报ORA-12537: TNS:connection closed 时候的日志如下:


[grid@ract1 alert]$ pwd
/grid/app/diag/tnslsnr/ract1/listener/alert
[grid@ract1 alert]$ cat log.xml



09-17 19:33