We recommend you use Qedit version 5.0 or later for MPE/iX 7.0.
We have not tested previous versions of Qedit against MPE/iX 7.0.
Qedit 5.0 has support for larger-than-4Gb files.
The only problem we expect is the line number limit of 8
digits (i.e. 99,999,999 lines). Users may need to set the increment
down to the minimum of .001 using the command "set inc .001"
We recommend you use Suprtool version 4.3.03 or later for MPE/iX 7.0.
We have not tested versions of Suprtool prior to 4.3 with MPE/iX 7.0.
The following are some important issues to note:
- Although large files are capable of 128Gb,
Suprtool, Suprlink and STExport have been tested with files only up to
20 Gb. We have sorted, linked and exported a 20Gb file.
- Keep in
mind that only fixed-length and KSAM64 files are capable of greater-than-4Gb.
Therefor some types of tasks in Suprtool can not work with greater than 4Gb files.
with STExport a task with Columns None (resulting in a variable length file),
with an Input source greater than 4Gb will fail on the Output command.
- In MPE/iX 7.0, a new version of IMAGE C.09.00
is available. This version of IMAGE now supports
1,200 items, 240 datasets and 64 paths from a master dataset. The previous
limits for a master were 1,023 items, 199 datasets and 16 paths.
Suprtool 4.3.03 supports these higher limits.
- IMAGE C.09.00 also supports datasets larger than 80 GB. In order to do this,
the IMAGE label was changed to keep track of records and
the pointers that hold them together. Prior to version C.09.00,
IMAGE stored records in what is known as Entryname format. This format
consisted of 32 bits, in which the first 24 bits represented the
block number and the last 8 bits represented the position of the record
within the block. This format limited the size of datasets to 80 GB,
which is the largest number of blocks that you can store in the
In IMAGE version C.09.00 and later, you can now select a new option
called the Entrynumber format. Although this format
still uses 32 bits, it does not represent the block and position
within the block, but rather a record number.
Suprtool 4.3.03 has been enhanced to support this new internal change to
IMAGE. Note that HowMessy currently returns an error when you attempt
to report on a dataset with this feature enabled, because the block
number calculations are no longer relevant for this type of