After you perform the basic downgrade steps, finish the process by handling residual tasks.
Installing system stored procedures of the old version drops auditing information
about system stored procedures. Use the output of sp_displayaudit recorded
during predowngrade to help determine the system stored procedures
for which auditing was enabled. Reenter the audit options using sp_audit.
For example, sp_addlogin was audited in your server before upgrading, run this command
to reenable auditing on sp_addlogin:
During the upgrade to Adaptive Server 15.7 you should have created a restore_msgs.ebf file.
Run this script now to restore your messages back to the
version from which you upgraded:
Note:
If you upgraded from a 15.0 or 15.0.1 release and are
reverting back to the 15.0 or 15.0.1 release, then you must only
run instmsgs.ebf file from the relevant release.
The on-disk structures of stored procedures, triggers, and
views may contain statement identity tokens, datatypes, and object
references that are not understood by the earlier Adaptive Server
versions. You must drop all compiled objects that use features introduced
into Adaptive Server subsequent to the release to which you are
downgrading.
If during the upgrade process you ran
the update all statistics on syslogins, you must delete
statistics for syslogins and
re-create them.
spt_values are dropped
and re-created when you run installmaster from
the release area you downgraded to. Any new types are eliminated
from this table.
Running instmstr from
the release area of the server to which you downgraded removes configuration
parameters that belong to 15.7, by deleting sysconfigures rows
for configuration parameters that do not exist in syscurconfigs.
After running instmstr, the error messages no
longer appear when you start the server.
If
you start a downgraded server using the 15.7 configuration file,
the new options generate an Unknown parameter message. The
unknown options are reported the first time you restart the server.
You can ignore these messages; the configuration file is
rewritten without the unknown options.