Open System Services Management and Operations Guide (G06.29+, H06.07+)

Environment Limits
Open System Services Management and Operations Guide—527191-005
E-7
File Size Limit Behavior for File Open Operations
Table E-3. File Format and Limits Table for File Open Behavior
Using This Function
To Open This
File...
32-Bit OSS
APIs such as
open( )
64-Bit OSS
APIs such as
open64( )
Guardian APIs
without 64-Bit
elections
Guardian APIs
with 64-Bit
elections
OSS small file
(< approx. 2 GB)
created on
H06.06 or later
H-series RVUs
or G06.29 or
later G-series
RVUs
2GB-8KB
(2,147,475,456
bytes)
Approximately
1TB-41MB,
constrained by
disk volume
space
2GB-8KB
(2,147,475,456
bytes)
Approximately
1TB-41MB,
constrained by
disk volume
space
OSS large file
(> approx. 2 GB)
created on
H06.06 or later
H-series RVUs
or G06.29 or
later G-series
RVUs
Fails with an
EOVERFLOW
error
Approximately
1TB-41MB,
constrained by
disk volume
space
Fails with a
FEOVERSIZEFILE
error
Approximately
1TB-41MB,
constrained by
disk volume
space
OSS small file
created on older
RVUs and on a
disk with a 514-
byte sector size
Approximately
2GB-32MB if
64-bit OSS API
has never been
used on this file
2GB-8KB
(2,147,475,456
bytes) if prior
open calls have
been closed
and if the file
has previously
been opened by
a 64-bit OSS
API
Approximately
1TB-41MB,
constrained by
disk volume
space
Approximately
2GB-32MB if 64-
bit API has never
been used on this
file
2GB-8KB
(2,147,475,456
bytes) if prior open
calls have been
closed and if the
file has previously
been opened by a
64-bit API
Approximately
1TB-41MB,
constrained by
disk volume
space