使用unixodbc连接数据库时出现IM004错误（macos）

Question

在我的 Mac 上，我尝试使用 unixodbc（来自 Homebrew 的 v.2.3.7）连接到数据库。

odbcinst -j显示：

DRIVERS............: /usr/local/etc/odbcinst.ini
SYSTEM DATA SOURCES: /usr/local/etc/odbc.ini
FILE DATA SOURCES..: /usr/local/etc/ODBCDataSources
USER DATA SOURCES..: /Users/homer/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8

~/.odbc.ini和的部分内容/usr/local/etc/odbc.ini：

[mysql-local]
description     = local server
Driver          = MySQLDriver
SERVER          = localhost
USER            = testuser
PASSWORD        = testpass
DATABASE        = testdb

部分内容/usr/local/etc/odbcinst.ini

[MySQLDriver]
Driver          = /usr/local/lib/libodbc.dylib
Setup           = /usr/local/lib/libodbc.dylib
FileUsage       = 1

驱动程序/安装文件链接到一个链接到实际驱动程序的文件：/usr/local/Cellar/unixodbc/2.3.7/lib/libodbc.2.dylib。我已将此文件的权限设置为 755。

然后我尝试连接：

isql mysql-local testuser testpass -v

结果是：

[IM004][unixODBC][Driver Manager]Driver's SQLAllocHandle on SQL_HANDLE_HENV failed
[ISQL]ERROR: Could not SQLConnect

由于某种原因我有osql，网络告诉我它是用来连接到 SQL Server 的。（也许它与 Brew 的 unixodbc 一起提供？）我可以用它来验证文件是否.ini被正确解析。因此

osql -I /usr/local/etc -S mysql-local -U testuser -P testpass

结果是：

"" is NOT a directory, overridden by
"/usr/local/etc".
checking odbc.ini files
    reading /Users/homer/.odbc.ini
[mysql-local] found in /Users/homer/.odbc.ini
found this section:
    [mysql-local]
    description = local server
    Driver      = MySQLDriver
    Server      = 127.0.0.1
    USER        = testuser
    PASSWORD        = testpass
    DATABASE    = testdb
looking for driver for DSN [mysql-local] in /Users/homer/.odbc.ini
  found driver line: "  Driver      = MySQLDriver"
  driver "MySQLDriver" found for [mysql-local] in .odbc.ini
found driver named "MySQLDriver"
"MySQLDriver" is not an executable file
looking for entry named [MySQLDriver] in /usr/local/etc/odbcinst.ini
  found driver line: "  Driver      = /usr/local/lib/libodbc.dylib"
  found driver /usr/local/lib/libodbc.dylib for [MySQLDriver] in odbcinst.ini
/usr/local/lib/libodbc.dylib is an executable file
"Server" found, not using freetds.conf
Server is "127.0.0.1"
looking up hostname for ip address 127.0.0.1

Configuration looks OK.  Connection details:

                   DSN: mysql-local
              odbc.ini: /Users/homer/.odbc.ini
                Driver: /usr/local/lib/libodbc.dylib
       Server hostname: localhost
               Address: 127.0.0.1

Attempting connection as testuser ...
+ isql mysql-local testuser testpass -v
[IM004][unixODBC][Driver Manager]Driver's SQLAllocHandle on SQL_HANDLE_HENV failed
[ISQL]ERROR: Could not SQLConnect
sed: /tmp/osql.dump.44362: No such file or directory

我尝试的一切总是归结为同样的错误：

[IM004][unixODBC][Driver Manager]Driver's SQLAllocHandle on SQL_HANDLE_HENV failed

为了更好地衡量，以下是来自的日志isql mysql-local testuser testpass：

[ODBC][54953][1538867223.117217][__handles.c][460]
        Exit:[SQL_SUCCESS]
            Environment = 0x7f9829010400
[ODBC][54953][1538867223.117416][SQLAllocHandle.c][377]
        Entry:
            Handle Type = 2
            Input Handle = 0x7f9829010400
[ODBC][54953][1538867223.117521][SQLAllocHandle.c][493]
        Exit:[SQL_SUCCESS]
            Output Handle = 0x7f982903e800
[ODBC][54953][1538867223.117601][SQLConnect.c][3721]
        Entry:
            Connection = 0x7f982903e800
            Server Name = [mysql-local][length = 11 (SQL_NTS)]
            User Name = [testuser][length = 8 (SQL_NTS)]
            Authentication = [********][length = 8 (SQL_NTS)]
        UNICODE Using encoding ASCII 'UTF-8' and UNICODE 'UCS-2-INTERNAL'

[ODBC][54953][1538867223.126854][SQLConnect.c][1380]Error: IM004
[ODBC][54953][1538867223.127046][SQLFreeHandle.c][290]
        Entry:
            Handle Type = 2
            Input Handle = 0x7f982903e800
[ODBC][54953][1538867223.127191][SQLFreeHandle.c][339]
        Exit:[SQL_SUCCESS]
[ODBC][54953][1538867223.127276][SQLFreeHandle.c][220]
        Entry:
            Handle Type = 1
            Input Handle = 0x7f9829010400

注意事项：

• 我在其他地方看到过同样的错误，需要 odbc 介导的与其他数据库（例如 SQL Server）的连接。在这些情况下提出的解决方案似乎不适用于 MySQL 连接。
• 我希望能与此建立联系，因为据说这是R Studio IDElinuxodbc中最大 SQL 集成所需的工具。
• 在 Linux 上我发现 unixodbc 工作得很好。

预先非常感谢任何能够为我指明正确方向的人。