问题描述
我在我的项目中使用Oracle Instant Client，并使用ruby-oci8 gem.我正在使用Mac Mojave OS
I am using Oracle instant client in my project and using ruby-oci8 gem. I am using Mac Mojave OS
我能够运行rails server并且服务器确实与数据库连接，但是当我运行rails c并尝试与任何表连接时，它会引发以下错误.
I am able to run the rails server and server does connect with database but when I run rails c and try to connect with any table it throws following error.
Running via Spring preloader in process 95609
Loading development environment (Rails 5.1.1)
User.last
objc[96849]: +[__NSPlaceholderDictionary initialize] may have been in progress in another thread when fork() was called.
objc[96849]: +[__NSPlaceholderDictionary initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
/Users/arvindmehra/.rvm/gems/ruby-2.4.0/gems/ruby-oci8-2.2.5/lib/oci8/oci8.rb:142: [BUG] Illegal instruction at 0x007fff6efbf2e5
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin18]
我无法使用Rails控制台与DB连接，奇怪的是Rails服务器正在工作，并且Application能够与DB连接.
I am not able to connect with DB using rails console, strange thing is rails server is working and Application is able to connect with DB.
推荐答案
我终于能够通过将ruby版本升级到2.4.4并添加export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES来解决它.我想问题在于OSX Mojave和ruby-2.4.0的组合，它实际上适用于OSX High Sierra
I was finally able to solve it by upgrading ruby version to 2.4.4 and adding export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES. I guess issue is with Combination of OSX Mojave and ruby-2.4.0 and its actually working for OSX High Sierra
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