r - ROracle interrupt long-running queries -

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i'm executing sql statements r interface using roracle package. takes lot of time , want interrupt it.

i find function "oracle()" in roracle package , function has parameter "interruptible = false" . seems can interrupt using set.

and in function document , says :

when interruptible set true, allows interrupting long-running queries on server executing query in thread. main thread checks ctrl-c , issues ocibreak/ocireset cancel operation on server. default interruptible false.

but try ctrl-c, doesn't work. can help? thanks!! 

sessioninfo: r version 3.4.1 (2017-06-30) platform: x86_64-w64- mingw32/x64 (64-bit) running under: windows 7 x64 (build 7601) service pack 1  matrix products: default  locale: [1] lc_collate=chinese (simplified)_people's republic of china.936       [2] lc_ctype=chinese (simplified)_people's republic of china.936    [3]      lc_monetary=chinese (simplified)_people's republic of china.936 [4] lc_numeric=c                                                  [5] lc_time=chinese (simplified)_people's republic of china.936





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