1 – Commit
Commit
Nocommit
Makes the database conversion permanent. When you specify the
Commit qualifier, the database is converted to an Oracle Rdb
release 7.2 database and cannot be returned to the previous
version. The default is Commit.
When you specify the Nocommit qualifier, you can convert the
database to Oracle Rdb release 7.2 and roll it back to the
previous version at a later time.
Using the Nocommit qualifier is helpful when you want to test
your applications against a new version of Oracle Rdb. In the
event that you find problems, you can roll back to the previous
version. Once you feel confident that your applications work well
with the new version, you should commit the converted database,
otherwise unnecessary space is taken up in the database to store
the obsolete alternate version of the metadata.
2 – Confirm
Confirm
Noconfirm
Requests user input during the conversion procedure. When you
specify the Confirm qualifier, Oracle RMU asks if you are
satisfied with your database and aij backup files. If the
database being converted has after-image journaling enabled,
Oracle RMU asks if you want to continue and states that after-
image journaling will be temporarily disabled.
3 – Path
Path
Identifies that the database is being specified by its data
dictionary path name instead of its file specification. The Path
qualifier is a positional qualifier.
4 – Prefix Collection
Prefix_Collection=option
When you convert a database to release 7.2 from a release
of Oracle Rdb prior to release 7.0, you can use the Prefix_
Collection qualifier to specify that sorted index prefix
cardinality collection be Enabled, Enabled Full, or Disabled
for all sysem and user sorted indexes.
The following options are available for use with the Prefix_
Collection qualifier:
o Disabled
Specifies that index prefix cardinality collection is to be
disabled.
o Enabled
Specifies that default collection is performed. The Oracle
Rdb optimizer collects approximate cardinality values for the
index columns to help in future query optimization.
Enabled Estimate
Specifies that prefix cardinality values for all indexes are
to be estimated.
o Enabled Collect
Specifies that prefix cardinality values for all indexes are
to be collected by calling the RMU Collect command.
o Full Requests that extra I/O be performed, if required, to
ensure that the cardinality values reflect the key value
changes of adjacent index nodes.
o Full=Estimate
Specifies that prefix cardinality values for all indexes are
to be estimated.
o Full=Collect
Specifies that prefix cardinality values for all indexes are
to be collected by calling the RMU Collect command.
5 – Reserve
Reserve=(Area=n,Aij=n)
Reserves space in the database root file for storage areas or
.aij files, or both. Replace the character n with the number of
storage areas or .aij files for which you want to reserve space.
Note that you cannot reserve areas for a single-file database.
You can reserve .aij files for a single-file database, but once
the database is converted, you cannot alter that reservation
unless you backup and restore the database.
This qualifier is useful if, when you are converting your
database, you anticipate the need for additional storage areas
or .aij files. Because the addition of new storage areas or .aij
files requires that users not be attached to the database, adding
them while the database is being converted minimizes the time
that the database is inaccessible to users.
By default, one .aij file and no storage area files are reserved.
6 – Rollback
Rollback
Norollback
Returns a database that has been converted to an Oracle Rdb
release 7.2 database (but not committed) to the previous version.
You might decide to return to the previous version of the
database for technical, performance, or business reasons.
The Norollback qualifier prevents you from returning your
converted database to the previous version. The default is the
Norollback qualifier.
If you specify both the Nocommit qualifier and the Rollback
qualifier in the same RMU Convert command, your database is
converted to Oracle Rdb release 7.2 and immediately rolled back
to the previous version when the RMU Convert command is executed.
This qualifier is valid only if you are converting from one of
the following releases: 7.0 or 7.1.