cached plan must not change result type

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hi,
   PGV14, client use PGJDBC driver and prepared statements, when a table "alter table alter column type ..." changes done, a lot of JDBC clients got this error "cached plan must not change result type".  when a JDBC client got this error first time after the DDL schema change, JDBC driver will clear this caching-plan and following same SQL statement got parsing again and new cached plan right?  
  How to avoid this issue when DDL schema changes ? 

Thanks,

James

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