mfc - Error IM004 when using ODBC to access SQL Server -


i'm developing mfc project , using odbc connect sql server 2008 server. each time when i'm read or write database, construct cxxx (as class derived crecordset , have bound useful fields rdx) object, open it, operate database, , close it.
however, after 1000 such operations, odbc driver reports error, has sqlstate:im004 in it, , refuse work on.
error string, learned due environment handle allocation error. don't know is, or why is.
please explain me , give me advice how pinpoint problem. thank you.


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