02-24-2012
Thanks for the response.
Actually i am sending this data out into datastage so that i can use the data for further processing.
The reason for me to try this is, the requirement states that these files should not be extracted to the disk.No scope for I/O.
Yes as you mentioned this is very slow.So wanted to check if I'm doing this right.
So there is no other way to this apart from what I'm doing?
Thanks.
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fsync(2) System Calls Manual fsync(2)
NAME
fsync, fdatasync - synchronize a file's in-core and on-disk states
SYNOPSIS
DESCRIPTION
and cause all modified data and attributes of fildes to be moved to a permanent storage device. This normally results in all in-core modi-
fied copies of buffers for the associated file to be written to a disk. and apply to ordinary files, and apply to block special devices on
systems which permit I/O to block special devices.
and should be used by programs that require a file to be in a known state, such as when building a simple transaction facility.
causes all modified data and file attributes of fildes required to retrieve the data to be written to disk.
causes all modified data and all file attributes of fildes (including access time, modification time and status change time) to be written
to disk.
Together, and constitute support for File Synchronization.
RETURN VALUE
and return 0 on success or -1 if an error occurs, and set to indicate the error.
ERRORS
fsync and fdatasync fail if any of the following conditions are encountered:
[EBADF] fildes is not a valid descriptor.
[EINVAL] fildes refers to a file type to which or does not apply.
WARNINGS
The current implementation of these functions is inefficient for large files.
AUTHOR
was developed by the University of California, Berkeley and HP.
SEE ALSO
fcntl(2), fcntl(5), open(2), select(2), sync(2), sync(1M), unistd(5).
STANDARDS CONFORMANCE
fsync(2)