Cause: A function was called with an
invalid argument.
Action: Contact your Oracle Customer
Support Representative.

Relared Errors:
ORA-06431:
ssaio: Invalid Block number
ORA-06432:
ssaio: Buffer Not Aligned
ORA-06433:
ssaio: LSEEK error, unable to seek to requested block.
ORA-06434:
ssaio: read error, unable to read requested block from database
file.
ORA-06435:
ssaio: write error, unable to write requested block to database
file.
ORA-06436:
ssaio: asynchronous I/O failed due to incorrect parameters.
ORA-06437:
ssaio: the asynchronous write was unable to write to the database
file.
ORA-06438:
ssaio: the asynchronous read was unable to read from the database
file.
ORA-06439:
ssaio: the asynchronous write returned incorrect number of
bytes
ORA-06440:
ssaio: the asynchronous read returned incorrect number of
bytes