我正在构建一个连接到多个 Oracle 数据库的应用程序。我连接到我们内部网络上的数据库没有问题,但我需要连接到托管在 Oracle 云上的数据库。在 SQL Developer 中,连接是使用 Oracle 钱包建立的,但我实际上不知道如何在 C# 中使用钱包。一个例子将不胜感激。
****编辑
我至少可以识别我的 TNS 条目,但是我遇到了一个我无法取得进展的问题。这是我的代码;
using System;
using System.Data;
using System.Data.Common;
using Oracle.ManagedDataAccess.Client;
class GetSchemaSample
{
static void Main(string[] args)
{
string constr = "User Id=/; Data Source=mytns;";
string ProviderName = "Oracle.ManagedDataAccess.Client";
DbProviderFactory factory = DbProviderFactories.GetFactory(ProviderName);
using (DbConnection conn = factory.CreateConnection())
{
try
{
conn.ConnectionString = constr;
conn.Open();
DataTable dtSchema = conn.GetSchema();
dtSchema.WriteXml(ProviderName + "_Schema.xml");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
Console.ReadLine();
}
}
}
并将其添加到我的 App.config;
<oracle.manageddataaccess.client>
<version number="*">
<settings>
<setting name="WALLET_LOCATION" value="c:\Oracle" />
<setting name="SQLNET.WALLET_OVERRIDE" value="true" />
</settings>
</version>
</oracle.manageddataaccess.client>
我遇到的错误是;
The path is not of a legal form.
at System.IO.Path.LegacyNormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
at System.IO.Path.GetFullPathInternal(String path)
at System.IO.Path.GetFullPath(String path)
at System.IO.FileSystemWatcher.StartRaisingEvents()
at OracleInternal.ConnectionPool.OracleConnectionDispenser`3.CreateSEPSFileWatcher(String walletPath, String walletFile)
at OracleInternal.ConnectionPool.OraclePoolManager.InitializeSEPSCredentials()
at OracleInternal.ConnectionPool.OraclePoolManager.Initialize(ConnectionString cs, OracleConnection con)
at OracleInternal.ConnectionPool.OracleConnectionDispenser`3.GetPM(ConnectionString cs, OracleConnection con, PM conPM, ConnectionString pmCS, SecureString securedPassword, SecureString securedProxyPassword, Boolean& bAuthenticated, Boolean& newPM)
at OracleInternal.ConnectionPool.OracleConnectionDispenser`3.Get(ConnectionString cs, PM conPM, ConnectionString pmCS, SecureString securedPassword, SecureString securedProxyPassword, OracleConnection connRefForCriteria)
at Oracle.ManagedDataAccess.Client.OracleConnection.Open()
at GetSchemaSample.Main(String[] args) in C:\Users\peter.holliday\source\repos\OACTesting\Connection1.cs:line 39
我已经尝试以我能想到的各种方式更新 app.config WALLET_LOCATION 条目以及钱包中的 sqlnet.ora 文件(我认为这是一条红鲱鱼,因为 app.config 似乎表明覆盖它),但我不能克服这个错误。即使是指向我如何查看错误中引用的“String walletFile”变量的值的指针也将不胜感激。