最新更新(2011年11月2日上午9时) 我试图运行从服务用tnsping和有用! 但是当我尝试连接时,仍然收到错误12154。我现在完全困惑,我不明白如何tnsping可以正常工作,但连接无法解析服务名称。无法从Windows服务连接到Oracle(:ORA-12154:TNS:错误无法解析服务名称(12154))
出于某种原因,当我运行从Windows服务下面的代码(在定时器事件),我得到的错误:ORA-12154:TNS:无法解析服务名称(12154)
当我运行完全相同的代码从Windows窗体应用程序,它连接就好了。服务和应用都在我的帐户下运行,因此帐户权限没有区别。
我很困惑,为什么服务失败,任何人都可以点亮这个请吗?
string connectionString = ";DSN=o1;UID=SCOTT;PWD=TIGER;DBQ=ORCL;DBA=W;APA=T;EXC=F;FEN=T;QTO=T;FRC=10;FDL=10;LOB=T;RST=T;GDE=F;FRL=F;BAM=IfAllSuccessful;MTS=F;MDI=F;CSR=F;FWC=F;PFC=10;TLO=0;";
OdbcConnection cnn;
cnn = new OdbcConnection(connectionString);
try
{
cnn.Open();
myEventLog.WriteEntry("Connection SUCCEEDED!!!");
cnn.Close();
}
catch (Exception ex)
{
string mes = "Connection FAILED!!!" + ex.Message;
myEventLog.WriteEntry(mes);
}
更新:
1)我试过用系统和用户DSN,都具有相同的行为
2)我添加了一个TNS_ADMIN系统环境变量,以使起诉它可以找到tnsnames.ora文件。这并没有改变行为。
最新更新(2011年11月1日):
1)很多的建议,都涉及把Oracle服务器的IP地址的连接字符串中绕过tnsnames.ora文件。不幸的是,该应用程序必须使用用户设置的Oracle连接,所以我们没有任何这些信息。我所要做的就是DSN。我必须使用Oracle DSN从Windows服务进行连接。
新更新(2011年11月2日): 1)它看起来像服务IS成功地读取tnsnames.ora文件。我跑的过程监控,并得到这些行:
7:52:54.4365217 AM OracleService.exe 4624 CreateFile C:\oracle\ora92\network\Names\sdns.ora NAME NOT FOUND Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a
7:52:54.4368466 AM OracleService.exe 4624 CreateFile C:\Windows\SysWOW64\tnsnames.ora NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
7:52:54.4371203 AM OracleService.exe 4624 CreateFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
7:52:54.4372693 AM OracleService.exe 4624 QueryBasicInformationFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS CreationTime: 01/11/2011 3:10:08 PM, LastAccessTime: 01/11/2011 3:10:08 PM, LastWriteTime: 01/11/2011 3:10:42 PM, ChangeTime: 01/11/2011 3:18:44 PM, FileAttributes: A
7:52:54.4372866 AM OracleService.exe 4624 CloseFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS
7:52:54.4375418 AM OracleService.exe 4624 CreateFile C:\oracle\ora92\network\ADMIN SUCCESS Desired Access: Read Data/List Directory, Synchronize, Disposition: Open, Options: Directory, Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
7:52:54.4375857 AM OracleService.exe 4624 QueryDirectory C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS Filter: tnsnames.ora, 1: tnsnames.ora
7:52:54.4376192 AM OracleService.exe 4624 CloseFile C:\oracle\ora92\network\ADMIN SUCCESS
7:52:54.4377770 AM OracleService.exe 4624 CreateFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a, OpenResult: Opened
7:52:54.4379306 AM OracleService.exe 4624 ReadFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS Offset: 0, Length: 337, Priority: Normal
7:52:54.4380061 AM OracleService.exe 4624 ReadFile C:\oracle\ora92\network\ADMIN\tnsnames.ora END OF FILE Offset: 337, Length: 4,096
7:52:54.4380276 AM OracleService.exe 4624 CloseFile C:\oracle\ora92\network\ADMIN\tnsnames.ora SUCCESS
7:52:54.4385823 AM OracleService.exe 4624 CreateFile C:\oracle\ora92\network\ADMIN\ldap.ora NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
因此,没有人有任何想法,为什么它会读取tnsnames.ora文件后失败?谢谢
由于它的工作原理,当你运行它,我会假设你的tnsnames.ora配置是否正确。您正在连接的ODBC DSN设置为系统DNS或用户DSN吗? – Tridus
我试过用系统和用户dsn,都有相同的行为。 –
您使用的是哪个版本的Windows? – WaldiMen