plugin URL to insert more than 20000 char's in Appian database.

Hi Vijaya -

Assuming your use case is sound, you might want to consider using a data type such as CLOB, BLOB , longtext, or XML to store a value of that size.
The brand and version of the database will determine what data type options are available to you.
Char or varchar data types won't be appropriate for a value that large.

That's a lot of data for one field, though.
Do you mind sharing your use case?

Thanks!