如何将加锁的PDF文件解锁

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select * from tbl_Articles WHERE ArticleID=2176757 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2176757 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2176757 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1065393,1032968,1055295,1061610,1048494,1107058,1083946,1100495,1049030,1095700,1110067,1101707,992026,1109308,1045085,1101849,1097575,1070058,1109669,1084259,1110586,1073820,1086872,1109499,1082954,1112839,1077208,1053058,1043167,1105065) ORDER BY field (ArticleID,1065393,1032968,1055295,1061610,1048494,1107058,1083946,1100495,1049030,1095700,1110067,1101707,992026,1109308,1045085,1101849,1097575,1070058,1109669,1084259,1110586,1073820,1086872,1109499,1082954,1112839,1077208,1053058,1043167,1105065)