连接数据数据很慢，alert报大量的这样日志：
Fatal NI connect error 12537, connecting to:
(LOCAL=NO)
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.1.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production
Time: 05-APR-2011 22:10:00
Tracing not turned on.
Tns error struct:
ns main err code: 12537
TNS-12537: TNS:connection closed
ns secondary err code: 12560
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
opiodr aborting process unknown ospid (32106) as a result of ORA-609
Tue Apr 05 22:10:00 2011
***********************************************************************
这是一些系统文件：
[sshuser@database1 etc]$ cat resolv.conf
nameserver 61.139.2.69
search localdomain
[sshuser@database1 etc]$ cat hosts
192.168.10.54 database1.localdomain database1
127.0.0.1 localhost.localdomain localhost
# listener.ora Network Configuration File: /usrapp/oracleapp/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = kszxorcl)
(ORACLE_HOME = /usrapp/oracleapp/product/11.2.0/dbhome_1)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = database1.localdomain)(PORT = 1521))
)
)
ADR_BASE_LISTENER = /usrapp/oracleapp
------解决方案--------------------
TNS-12537: TNS:connection closed
Cause: "End of file" condition has been reached; partner has disconnected.
Action: None needed; this is an information message.
------解决方案--------------------
好像是BUG，查看解决方法
http://tolywang.itpub.net/post/48/406624
------解决方案--------------------
TNS-12537: TNS:connection closed
会话过多，造成连接关闭，
增加会话限制。。。