Sybase ASE opens files with either the O_SYNC or the O_DIRECT flag, the later being availlable since ASE 15. The general good practice is to use raw devices or

Sybase ASE opens files with either the O_SYNC or the O_DIRECT flag, the later being availlable since ASE 15. The general good practice is to use raw devices or direct i/o for write intensive workloads. BTW it uses asynchronous i/o too.