Sv: DDL in active production database

På mandag 25. september 2023 kl. 02:01:28, skrev Skelton, Adam J <
Adam(dot)Skelton(at)fisglobal(dot)com <mailto:Adam(dot)Skelton(at)fisglobal(dot)com>>:

Hi,

I hope I have the correct group here.

I have a question that I am struggling to find answers for in the
documentation. Does Postgres have problems with creation / changes to database
schema objects when the database is actively being used?

In particular – rightly or wrongly – our developers want our application to
occasionally issue the following kinds of DDL when it’s in active use

Alter table ... add column ...

Create / drop materialised view ...

Create / drop table created with INHERITANCE

I know oracle hates this and you can run into some serious issues, SQL server
generally lets you away with it.

Should we expect problems if we decided to do this in the latest version of
Postgres?

Thanks for your time.

Adam

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It will cause problems if you mix DDL and DML when having deferred constraints
with following updates in the same TX.

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