Just a few considerations on this, based on my support experience: a few changes have been introduced, between those 2 versions, and here are some of the pain points that were sort of recurring.1 - The User Interface is no longer the official GUI in v12.
Its replacement is the Automic Web Interface. The UI is still available but misses the new features introduced in v12.2 - The DB schema was modified:
- MQ tables have been doubled since v11.2 to allow the Zero Downtime Upgrade.
- some fields content is no longer of "varchar" type, but was changed to "BLOB"
You may want to check statements contained in our SQLI and SEC_SQLI variables if you are using any, to avoid running into issues.3 - Message length was extended by one character.
Not necessarily a big issue, but if you are using script functions like PREP_PROCESS_REPORT and STR_CAT to look for messages in reports, results will be offset by one character.
Of course this is not an extensive list, just a few things you may want to check.
Otherwise, like my colleague Harald_Heidinger_152
mentioned, we suggest to use the following tools:
- Release Notes
: will allow you to get a list of changes, added features and bug fixes between 2 given versions.
- Compatibility Matrix
: allows you to verify if your OS and applications are compatible with our software.