How to drop an object through OMB+

Question

Need to check if a Mapping exists, and then drop it.
How is it possible?
OMBCC works on Runtime, and following message comes
PUB01010: Object is not deletable.
- Jojo

Answer 1

Well, the answer to how to check for and drop if neccessary a mapping is something like:
OMBCC 'MyProject'
OMBCC 'MyModule'
set lst [OMBLIST MAPPINGS]
if {[string match *MY_MAPPING_NAME* $lst]} { 
OMBDROP MAPPING 'MY_MAPPING_NAME'
Although, to be honest, it would be just as efective to arbitrarily simply try and drop the mapping first and ignore any not found errors that get returned.
As to the rest, you should be able to simply redeploy a new version without any issues. As it is Pl/Sql generated code, there shouldn't be any problems with overwriting the old copy. Now, you probably need to set the deployment plan to be a "REPLACE" rather than a "CREATE", so here is where it might be that you want to check for existance of an old version prior to creating the deployment plan, but dropping a pre-existing version is just as valid.