Turns off use of asynchronous I/O.
{ dbeng12 | dbsrv12 } -ua ...
Linux
By default, the database server uses asynchronous I/O on Linux when possible. To use asynchronous I/O, the following conditions must be met:
The library libaio.so can be loaded at run time.
The kernel has asynchronous I/O support.
If you want to turn off the use of asynchronous I/O, specify the -ua dbeng12/dbsrv12 server option.