As of now, INT gets translated into INTEGER as a column type. Oracle treats INTEGER as NUMBER(38,0) which is the maximum size. It would be great if it gets treated as NUMBER(10,0). Your 4.0.x version seems to have the fixed placed in, but doesn't seem to have a release window of anytime soon. Also, there's an Oracle documentation that would suggest treating MySQL INT and INTEGER as NUMBER(10,0). References will be linked below.
Now in the same oracle documentation, it suggested that mediumint gets converted as NUMBER(7,0). Currently in the code in master, it returns MEDIUMINT as a column type. This is a bug because there's no such thing as medium int type in Oracle and will fail the sql statement. Also, someone made a comment about it always returning a smallint. I believe that's a typo.
Changelog Type Int Support.
https://github.com/liquibase/liquibase/blob/master/liquibase-core/src/main/java/liquibase/datatype/core/IntType.java
As of now, INT gets translated into INTEGER as a column type. Oracle treats INTEGER as NUMBER(38,0) which is the maximum size. It would be great if it gets treated as NUMBER(10,0). Your 4.0.x version seems to have the fixed placed in, but doesn't seem to have a release window of anytime soon. Also, there's an Oracle documentation that would suggest treating MySQL INT and INTEGER as NUMBER(10,0). References will be linked below.
https://github.com/liquibase/liquibase/blob/4.0.x/liquibase-core/src/main/java/liquibase/datatype/core/IntType.java
https://docs.oracle.com/cd/E12151_01/doc.150/e12155/oracle_mysql_compared.htm#i1027526
Now in the same oracle documentation, it suggested that mediumint gets converted as NUMBER(7,0). Currently in the code in master, it returns MEDIUMINT as a column type. This is a bug because there's no such thing as medium int type in Oracle and will fail the sql statement. Also, someone made a comment about it always returning a smallint. I believe that's a typo.
https://github.com/liquibase/liquibase/blob/master/liquibase-core/src/main/java/liquibase/datatype/core/MediumIntType.java