The maximum size of a VARCHAR data type in DB2 is 4046 bytes.
As of my last knowledge update in January 2022, the maximum size of the VARCHAR data type in IBM Db2 depends on the version and platform. In general, Db2 supports VARCHAR sizes up to 32,672 bytes.
However, it’s important to note that this information may have changed if there have been updates or new releases of Db2 since then. I recommend checking the official IBM Db2 documentation or contacting IBM support for the most up-to-date and accurate information regarding the maximum size of VARCHAR in the specific version of Db2 you are using.