R连接oracle数据库Error in odbcFetchRows negative length vectors are not allowed解决方法

问题： 解决方法：配置ODBC连接时，对于oracle和Sybase驱动需要设置参数believeNRows=FALSE 参数believeNRows说明：logical. Is the number of rows returned by the ODBC connection believable? Not true for some Oracle and Sybase drivers, ap

>>阅读原文<<