SSIS-for each循环中的OLE Db目标连接错误

我在SSIS包的for each循环中有dataflow任务。它将数据转储到OLEDB目标中,该目标是SQLServer数据库。它在for each循环中成功地运行了大约九次迭代,然后在第十次循环中出错:

Error: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER.

The AcquireConnection method call to the connection manager xxxxx failed with error code 0xC0202009.

TCP Only one usage of each socket address protocol/network address/port is normally permitted.

只是澄清一下,我并没有动态地改变任何连接。