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Installation and Initial Configuration 1-7
Upgrade an Earlier Version of OnLine
If you are installing OnLine 5.x and plan to run it on the same host machine
where you are running an earlier version of OnLine, you must load the
OnLine 5.x software into a different $INFORMIXDIR directory than the one
that contains your earlier server software. To install OnLine 5.x, follow all the
steps illustrated on page 1-10. Be sure that you define the OnLine 5.x INFOR-
MIXDIR
and PATH environment variables correctly for user informix. After
you complete the software load and installation, turn to page 1-10 of this
manual for instructions on completing your initial configuration for
OnLine 5.x.
Upgrade an Earlier Version of OnLine
If you are upgrading an earlier version of OnLine, you do not need to allocate
more UNIX disk space than is already set aside for OnLine. The tasks in the
upgrade procedure follow:
1. Compare Your Current Configuration to OnLine 5.x.
2. Create a Level-0 Archive.
3. Load the Software and Execute the install Script.
4. Initialize Shared Memory.
5. Run tbcheck to verify database integrity.
6. Create a New Level-0 Archive.
Warning: Do not initialize disk space if you are upgrading your OnLine system. If
you initialize disk space, you destroy your current OnLine system and all existing
data.
Compare Your Current Configuration to OnLine 5.x
OnLine 5.x adds 10 configuration parameters to support features and
improved performance. Informix recommends that you compare the
contents of tbconfig.std to your current configuration file before you
initialize shared memory. You might decide to modify your current configu-
ration or to specify nondefault values when you initialize shared memory to
better take advantage of OnLine 5.x features. The contents of tbconfig.std are
described on page 1-13. Guidelines for setting the values of the parameters
begin on page 1-20.