TNS-12537、TNS-12547及Oracle ORA-609的解决
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今天有人报告连接oracle 数据库及其缓慢,我测试了一下大约要1分钟左右。
查看alert_orcl.log,有大量的这样的错误:
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: 29-AUG-2012 13:08:34
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 (8275) as a result of ORA-609
Wed Aug 29 13:08:54 2012
Fatal NI connect error 12547, 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: 29-AUG-2012 12:41:39
Tracing not turned on.
Tns error struct:
ns main err code: 12547
TNS-12547: TNS:lost contact
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 (7787) as a result of ORA-609
Wed Aug 29 12:41:59 2012
尝试一:
Sqlnet.ora: SQLNET.INBOUND_CONNECT_TIMEOUT=180
Listener.ora: INBOUND_CONNECT_TIMEOUT_listener_name=120
然后listener reload,虽然这样的错误少了,但是登录依然缓慢
最终解决:
原来是我当时用数据库服务器查资料,设置了2个DNS,而其中一个DNS是错的,这在看网页时没问题,但是数据库连接的时候就去搜索DNS去了,导致的时间很长,直接把这2个DNS删除,使用本地的host文件来解析,连接又很快了。
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