OCCI with Visual Studio 2005

只写了一句：
Environment *env;

编译错误：
1>d:\documents\visual studio 2005\projects\oci_test\oci_test\oci_testdlg.h(16) : error C2143: syntax error : missing ';' before '*'
1>d:\documents\visual studio 2005\projects\oci_test\oci_test\oci_testdlg.h(16) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\documents\visual studio 2005\projects\oci_test\oci_test\oci_testdlg.h(16) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

解决方法：
using namespace oracle::occi;