TCP/IP 错误
当检测到 TCP/IP 特定的通信错误时，软件会返回SQL30081N消息 ( -30081 )。通信子系统遇到的 TCP/IP 错误在SQL30081N消息的错误标记列表中返回。
TCP/IP
下表列出了errnosLinux® 和 UNIX 操作系统上的常见 TCP/IP 错误符号 ( )。UNIX 操作系统中 TCP/IP 错误的完整列表可以在/usr/include/sys/errno.h文件中找到。在 Linux 操作系统上，可以在/usr/include/asm/errno.h文件中找到 TCP/IP 错误的完整列表。
errnos | AIX® error number | HP-UX error number | Solaris error number | Linux error number | Description |
|---|---|---|---|---|---|
| EINTR | 4 | 4 | 4 | 4 | The function specified was interrupted by a signal. |
| EBADF | 9 | 9 | 9 | 9 | Bad socket. The socket might have been corrupted. |
| EAGAIN | 11 | 11 | 11 | 11 | Resource temporarily unavailable. |
| EFAULT | 14 | 14 | 14 | 14 | Bad address. On connect, bad address. On receive, the data was directed to be received into a nonexistent or protected part of the process address space. The buffer is not valid. |
| EBUSY | 16 | 16 | 16 | 16 | Resource busy. |
| EINVAL | 22 | 22 | 22 | 22 | Invalid argument that is passed to the specified function or the socket is closed. The EINVAL error can be returned if there was a memory overwrite, or buffer overflow problem. |
| ENFILE | 23 | 23 | 23 | 23 | Too many open files in the system. |
| EMFILE | 24 | 24 | 24 | 24 | The per-process file descriptor table is full. Number of file descriptors/sockets for the process is exceeded. |
| ENOSPC | 28 | 28 | 28 | 28 | No space is left on a device or system table. |
| EPIPE | 32 | 32 | 32 | 32 | Broken pipe. |
| EWOULDBLOCK | 54 | 246 | 11 | 11 | On the connect function, the range that is allocated for TCP/UDP ephemeral ports is exhausted. (Some operating systems return the same error as EAGAIN.) |
| ENOTSOCK | 57 | 216 | 95 | 88 | Socket operation on a non-socket. |
| ENOPROTOOPT | 61 | 220 | 99 | 92 | Option is unknown. |
| EADDRINUSE | 67 | 226 | 125 | 98 | The specified address is already in use. Perhaps the previous process that established the connection was terminated abnormally or was not cleaned up properly. |
| EADDRNOTAVAIL | 68 | 227 | 126 | 99 | The specified host name or IP address is not available from the local system. |
| ENETDOWN | 69 | 228 | 127 | 100 | The network is down. |
| ENETUNREACH | 70 | 229 | 128 | 101 | No route to the network or host is available. |
| ENETRESET | 71 | 230 | 129 | 102 | The network dropped the connection on reset. |
| ECONNRESET | 73 | 232 | 131 | 104 | Connection was reset by the partner. |
| ENOBUFS | 74 | 233 | 132 | 105 | Insufficient memory or resources were available in the system to complete the call. |
| EISCONN | 75 | 234 | 133 | 106 | The socket is already connected. |
| ENOTCONN | 76 | 235 | 134 | 107 | The socket is not connected. |
| ETIMEDOUT | 78 | 238 | 145 | 110 | The connection was timed out. |
| ECONNREFUSED | 79 | 239 | 146 | 111 | The connection was refused. If you are trying to connect to the database, check that the database manager and TCP/IP protocol support at the server were started successfully. If you specified the SOCKS protocol support, you must also ensure that the TCP/IP protocol support at the SOCKS server was started successfully. |
| EHOSTDOWN | 80 | 241 | 147 | 112 | The host is down. |
| EHOSTUNREACH | 81 | 242 | 148 | 113 | No route to the host is available. |
The complete list of the TCP/IP errors in Windows operating system can be found in the winsock2.h file. The winsock2.h file is not installed on your system if you do not have a development environment installed. For a list of Windows TCP/IP errors, search for Windows sockets error codes at http://msdn.microsoft.com/
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