文档解释
ORA-07256: sptrap: cannot set up signal handler to catch exceptions.
Cause: System failed to set up signal handler to catch exceptions.
Action: Check errno and sercose[0] for the signal number that failed.
ORA-07256：错误表明sptrap工具无法设置信号处理程序来捕获异常。
官方解释
ORA-07256: sptrap: cannot set up signal handler to catch exceptions.
Cause: sptrap was unable to set up a signal handler to catch exceptions.
Action: Check that the DBMS_DEBUG_JDWP package is granted the debug access privilege.
常见案例
ORA-07256的通常情况是由于没有正确配置非SQL组件，例如存储过程及其包，通用例程或在JVM运行期间调制，而出现未处理异常。
正常处理方法及步骤
1. 检查事务
2. 检查是否具备DBMS_DEBUG_JDWP包的调试权限
3. 确认所启动的处理程序已经正确接收异常
4. 确认没有在调用的通用例程或存储过程中发生异常
