创建conn到 Oracle 数据库的简单连接后，我编写如下查询：
dbGetQuery(conn, "select * from CUSTOMERS where rownum <= 10")
由于表CUSTOMERS存在，这将返回一组行。
但是，如果我编写以下查询并意外键入CSUTOMERS, （U 和 S 已切换），我会收到一个实际上关闭 R 或 RStudio 的错误。我喜欢以交互方式使用 R，这意味着我不可避免地会出现拼写错误和引用不存在的表或列。如果由于您在 SQL 中输入错误而导致 R 会话崩溃，RJDBC 将完全无法使用。
下面是代码和由此产生的错误。
dbGetQuery(conn, "select * from CSUTOMERS where rownum <= 10")
2016-04-04 20:03:27.475 R[3292:355239] Apple AWT Internal Exception : java.sql.SQLSyntaxErrorException: ORA-00942: table or view does not exist
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:193)
at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:873)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1167)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1289)
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1491)
at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:406)
2016-04-04 20:03:27.475 R[3292:355239] *** Terminating app due to uncaught exception 'JavaNativeException', reason: 'java.sql.SQLSyntaxErrorException: ORA-00942: table or view does not exist
'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff998c803c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9065976e objc_exception_throw + 43
2 CoreFoundation 0x00007fff998c7bd9 -[NSException raise] + 9
3 JavaNativeFoundation 0x000000010cc4fc3f JNFCallStaticVoidMethod + 213
4 libawt.jnilib 0x00000001157a614d setBusy + 53
5 CoreFoundation 0x00007fff997e4127 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
6 CoreFoundation 0x00007fff997e4080 __CFRunLoopDoObservers + 368
7 CoreFoundation 0x00007fff997d62ba __CFRunLoopRun + 1178
8 CoreFoundation 0x00007fff997d5bd8 CFRunLoopRunSpecific + 296
9 libtcl8.6.dylib 0x000000010c10c6a7 Tcl_WaitForEvent + 293
10 libtcl8.6.dylib 0x000000010c0c2742 Tcl_DoOneEvent + 357
11 tcltk.so 0x000000010c01a6ca TclSpinLoop + 26
12 libR.dylib 0x0000000106700188 R_ToplevelExec + 456
13 tcltk.so 0x000000010c01a697 TclHandler + 55
14 libR.dylib 0x000000010689e277 R_ProcessEvents + 55
15 libR.dylib 0x000000010673f49d R_CheckUserInterrupt + 77
16 libR.dylib 0x0000000106745062 Rf_eval + 66
17 libR.dylib 0x0000000106735b9b Rf_findFun + 331
18 libR.dylib 0x000000010674cb93 bcEval + 29491
19 libR.dylib 0x00000001067451a6 Rf_eval + 390
20 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
21 libR.dylib 0x0000000106756999 bcEval + 69945
22 libR.dylib 0x00000001067451a6 Rf_eval + 390
23 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
24 libR.dylib 0x0000000106745537 Rf_eval + 1303
25 libR.dylib 0x000000010679ebe3 do_begin + 451
26 libR.dylib 0x000000010674562e Rf_eval + 1550
27 libR.dylib 0x000000010674562e Rf_eval + 1550
28 libR.dylib 0x000000010679ebe3 do_begin + 451
29 libR.dylib 0x000000010674562e Rf_eval + 1550
30 libR.dylib 0x000000010679cf2e R_execClosure + 926
31 libR.dylib 0x000000010679cb25 R_execMethod + 613
32 methods.so 0x00000001088946cd R_dispatchGeneric + 2173
33 libR.dylib 0x00000001067e1cda do_standardGeneric + 634
34 libR.dylib 0x0000000106757d4d bcEval + 74989
35 libR.dylib 0x00000001067451a6 Rf_eval + 390
36 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
37 libR.dylib 0x0000000106756999 bcEval + 69945
38 libR.dylib 0x00000001067451a6 Rf_eval + 390
39 libR.dylib 0x000000010679cf2e R_execClosure + 926
40 libR.dylib 0x000000010679cb25 R_execMethod + 613
41 methods.so 0x00000001088946cd R_dispatchGeneric + 2173
42 libR.dylib 0x00000001067e1cda do_standardGeneric + 634
43 libR.dylib 0x00000001067456a8 Rf_eval + 1672
44 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
45 libR.dylib 0x0000000106745537 Rf_eval + 1303
46 libR.dylib 0x000000010679f752 do_set + 1858
47 libR.dylib 0x000000010674562e Rf_eval + 1550
48 libR.dylib 0x000000010679ebe3 do_begin + 451
49 libR.dylib 0x000000010674562e Rf_eval + 1550
50 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
51 libR.dylib 0x0000000106745537 Rf_eval + 1303
52 libR.dylib 0x000000010679f752 do_set + 1858
53 libR.dylib 0x000000010674562e Rf_eval + 1550
54 libR.dylib 0x000000010679ebe3 do_begin + 451
55 libR.dylib 0x000000010674562e Rf_eval + 1550
56 libR.dylib 0x000000010674562e Rf_eval + 1550
57 libR.dylib 0x000000010679ebe3 do_begin + 451
58 libR.dylib 0x000000010674562e Rf_eval + 1550
59 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
60 libR.dylib 0x0000000106745537 Rf_eval + 1303
61 libR.dylib 0x000000010679ebe3 do_begin + 451
62 libR.dylib 0x000000010674562e Rf_eval + 1550
63 libR.dylib 0x000000010674562e Rf_eval + 1550
64 libR.dylib 0x000000010674562e Rf_eval + 1550
65 libR.dylib 0x000000010679ebe3 do_begin + 451
66 libR.dylib 0x000000010674562e Rf_eval + 1550
67 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
68 libR.dylib 0x0000000106745537 Rf_eval + 1303
69 libR.dylib 0x000000010679ebe3 do_begin + 451
70 libR.dylib 0x000000010674562e Rf_eval + 1550
71 libR.dylib 0x000000010679cf2e R_execClosure + 926
72 libR.dylib 0x000000010679cb25 R_execMethod + 613
73 methods.so 0x00000001088946cd R_dispatchGeneric + 2173
74 libR.dylib 0x00000001067e1cda do_standardGeneric + 634
75 libR.dylib 0x00000001067456a8 Rf_eval + 1672
76 libR.dylib 0x000000010679f752 do_set + 1858
77 libR.dylib 0x000000010674562e Rf_eval + 1550
78 libR.dylib 0x000000010679ebe3 do_begin + 451
79 libR.dylib 0x000000010674562e Rf_eval + 1550
80 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
81 libR.dylib 0x0000000106745537 Rf_eval + 1303
82 libR.dylib 0x000000010679f752 do_set + 1858
83 libR.dylib 0x000000010674562e Rf_eval + 1550
84 libR.dylib 0x000000010679ebe3 do_begin + 451
85 libR.dylib 0x000000010674562e Rf_eval + 1550
86 libR.dylib 0x000000010679cf2e R_execClosure + 926
87 libR.dylib 0x000000010679cb25 R_execMethod + 613
88 methods.so 0x00000001088946cd R_dispatchGeneric + 2173
89 libR.dylib 0x00000001067e1cda do_standardGeneric + 634
90 libR.dylib 0x00000001067456a8 Rf_eval + 1672
91 libR.dylib 0x000000010679bcb8 Rf_applyClosure + 1400
92 libR.dylib 0x0000000106745537 Rf_eval + 1303
93 libR.dylib 0x00000001067cfae3 Rf_ReplIteration + 675
94 libR.dylib 0x00000001067d0fe5 R_ReplConsole + 149
95 libR.dylib 0x00000001067d0f19 run_Rmainloop + 73
96 R 0x000000010669af3b main + 27
97 libdyld.dylib 0x00007fff95d9d5c9 start + 1
98 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type JNFException
Abort trap: 6