You can upgrade to Adaptive Server 15.0 from any of these versions:
11.9.2.6 and later
12.0.x
12.5.x
Adaptive Server version 15.0 does not support upgrade
from Adaptive Server version 12.5.3a.
For a server installation 11.5.x and older, Sybase recommends that you upgrade to version 12.0, then upgrade to version 15.0.
Only upgrades to and from the same page size are supported. Changing the server schema from one page size to another is a database migration. See sybmigrate in the Utility Guide for information about migration.
Upgrading Adaptive Server consists of three processes:
Install the new Adaptive Server on top of the old %SYBASE% directory.
For the new server installation, perform the pre-upgrade checks on the older server using the preupgrd.exe utility, located at %SYBASE%\%SYBASE_ASE%\upgrade.
preupgrade runs against the old servers. It checks that all required databases exist and that they are large enough. It verifies that stored procedures have the text required for upgrade, and that configuration parameters are correct for the new server and for upgrading. It verifies that datatype definitions do not conflict with the new server’s requirements. When preupgrade runs without reporting any errors, you can then:
Shut the old server down.
Start the new server against the old installation.
Run the upgrade process.
Advisory warnings are issued when configuration parameters
are not set to the default. These do not require any action.
The preupgrade and upgrade utilities are internally called by syconfig.exe or sybatch.exe.
Each new version of Adaptive Server contains features that introduce new parameters, commands, reserved words, and so on. For this reason, preupgrade is for preparing the old server for upgrade.
syconfig.exe, sybatch.exe, or preupgrd.exe runs various checks to determine how much space you must add to the old server to successfully upgrade the old server to the new.
As part of the pre-upgrade tasks, syconfig.exe, sybatch.exe, or preupgrd.exe scans all databases and catalogs and determines how much free space is required to upgrade successfully. Essentially, syconfig.exe, or sybatch.exe searches for the largest catalog, then calculates the required free space by doubling the size of the largest catalog, and adding approximately 10 percent for logging the upgrade changes for each catalog.
During the pre-upgrade process, syconfig.exe, sybatch.exe, or preupgrd.exe returns informational messages as it checks the old server. You must fix all reported problems, and run syconfig.exe, sybatch.exe, or preupgrd.exe cleanly before beginning the upgrade process. Once the old server is eligible to be upgraded, syconfig.exe, sybatch.exe, or preupgrd.exe shuts down the old server, starts the new server against the existing databases, and begins the upgrade process.
