Oracle: Adding, renaming, and dropping columns on live database -


what operations permitted , not permitted on live, running oracle database? specifically, how handled when adding, dropping, , renaming columns?

you can add, drop, , rename columns without issue.

caveats,

adding column default value forces database issue update statement existing rows. careful on large tables or load spike.

rename column can break app. plan otherwise should fine. realize generating errors queries try access column unless plan things properly.


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