Solution : https://service.sap.com/sap/support/notes/798194 (SAP Service marketplace login required)
Summary :
Oracle trace files with 'Ioctl ASYNC_CONFIG error' and related messages indicate issues with asynchronous I/O on HP-UX systems. Problems arise when Oracle attempts to access /dev/async, which may lack configuration or not exist, particularly when using file systems as opposed to raw devices. These issues generally do not affect database operations as Oracle defaults to synchronous I/O. Solutions include managing privileges, adjusting SGA_MAX_SIZE, or ensuring adequate memory availability. Further, detailed remediation can be found in specified Metalink documents. For unresolved issues, consider consulting with HP for additional system configuration support.
Key words :
errno = <err_no>file '/dev/async', actual accessible sga size, errno = <err_no>async driver, decreased sga memory area, /dev/async device, ioctl async_config error, error number 12 refers, sufficient memory resources, solution general options, setprivgrp dba mlock
Related Notes :
| 793113 | FAQ: Oracle I/O configuration |