我的一个.Net应用程序试图连接Oracle数据库时出现了此错误。
错误提示说：当在64位模式下安装32位Oracle客户端组件时，将会发生此问题。但我已经多次确认客户端已经安装在x64位而不是32位。
Date Time: 6/8/2014 10:57:55 AM: System.InvalidOperationException: Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed. ---> System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
at System.Data.Common.UnsafeNativeMethods.OCILobCopy2(IntPtr svchp, IntPtr errhp, IntPtr dst_locp, IntPtr src_locp, UInt64 amount, UInt64 dst_offset, UInt64 src_offset)
at System.Data.OracleClient.OCI.DetermineClientVersion()
--- End of inner exception stack trace ---
at System.Data.OracleClient.OCI.DetermineClientVersion()
at System.Data.OracleClient.OracleInternalConnection.OpenOnLocalTransaction(String userName, String password, String serverName, Boolean integratedSecurity, Boolean unicode, Boolean omitOracleConnectionName)
at System.Data.OracleClient.OracleInternalConnection..ctor(OracleConnectionString connectionOptions)
at System.Data.OracleClient.OracleConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.OracleClient.OracleConnection.Open()
at CustomizedSetupInstaller.Runscripts.InitializeDBObjects(String connectionString, String dbProvider)
System.Data.OracleClient。该命名空间已被弃用，并将在未来的 .NET 版本中删除。也许您正在使用32位版本？它也不是 Oracle 客户端的一部分，因此无论您使用的是32位还是64位 Oracle 客户端都是无关紧要的。理想情况下，您应该改为使用Oracle.DataAccess（或Oracle.ManagedDataAccess）。 - Luke WoodwardSystem.Data.OracleClient只是提供程序，它还使用一个必须与架构匹配的Oracle客户端。只有Oracle.ManagedDataAccess不需要安装额外的Oracle客户端。也许Oracle客户端是x64，但你的应用程序是32位的，这也行不通。可以在同一台机器上安装32位和64位的Oracle客户端。 - Wernfried Domscheit