Error "ORA-28040: No matching authentication protocol" When Using SQLNET.ALLOWED_LOGON_VERSION (Doc
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JDBC - Version 10.1.0 to 10.2.0.5
Information in this document applies to any platform.
SYMPTOMS
When using the property "SQLNET.ALLOWED_LOGON_VERSION=10" set in the file sqlnet.ora on the server side, a 10g JDBC thin driver connecting to this 10g oracle database, fails with following errors:
The Network Adapter could not establish the connection
....
ORA-28040: No matching authentication protocol
.
Configuring SQLNET.ORA on the server side.
CAUSEBUG 6051243 - ORA-28040: WHEN LISTENER USES SQLNET.ALLOWED_LOGON_VERSION
A 10.2 thin jdbc driver is identifying itself as 8.1.5 client and hence the connection is failing with error ORA-28040: No matching authentication protocol
To resolve the above issue you may implement any one of the following :-
- Change the entry in sqlnet.ora file on the server machine:
from:
SQLNET.ALLOWED_LOGON_VERSION=10
to:
SQLNET.ALLOWED_LOGON_VERSION=8
OR
- Use the OCI driver instead of the THIN driver. The OCI driver identifies itself correctly as a 10.2 client and thus the connection succeeds.
OR
- If you are using 10.2.0.4 version of the driver then, you may download Patch:6779501 from My Oracle Support.
OR
- If you are using 10.1.0.5.0 version of the driver then, you may download Patch:6505927 from My Oracle Support.
OR
- Use JDBC 11g THIN driver.
终极解决方案： Invalid character found in the request target. The valid characters are defined in RFC 3986 25-Aug-2018 11:27:27.
Oracle连接sqlplus时连接不上，报如下错误： ORA-12705: Cannot access NLS data files or invalid environment specified 解决方案： 如报错所示，很明显是字符集的问题。
prudentwoo 10g/11g OCP 11g OCM，ITPUB和CSDN专家及专家讲师；有着多年数据库从业经验，资深Oracle数据库专家，现就职于北京海量数据技术股份有限公司担任高级dba职务，为央视，银行，电信等各行业及企业提供过技术支持服务
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