No more data to read from socket). java.sql.SQLRecoverableException: No more data to read from socke

Hi in the log of Oracle WCC 12c  version 12.2.1.3   i can see the constant  error

No more data to read from socket). java.sql.SQLRecoverableException: No more data to read from socket,  when we have a lot  checkin

we  to do tuning  database  and datasource but the error continue

Batchloader: Unable to execute service CHECKIN_ARCHIVE and function processCheckinArchive.

Possible database connection failure encountered. Error message: (!csDbUnableToCreateResultSet,QlatestDocName(SELECT/*+ INDEX (Revisions dDocName_Revisions)*/ *

FROM Revisions

WHERE (Revisions.dDocName='IQ_22748625' AND Revisions.dStatus<>'DELETED' AND Revisions.dRevRank=0))!$No more data to read from socket). java.sql.SQLRecoverableException: No more data to read from socket. [