Compsed task gets restarted automatically when gets jdbc connection error

[Setxand]

somehow the batch job in the composed task got the error:

org.springframework.dao.DataAccessResourceFailureException: PreparedStatementCallback; SQL [SELECT TASK_EXECUTION_ID, START_TIME, END_TIME, TASK_NAME, EXIT_CODE, EXIT_MESSAGE, ERROR_MESSAGE, LAST_UPDATED, EXTERNAL_EXECUTION_ID, PARENT_EXECUTION_ID from BOOT3_TASK_EXECUTION where TASK_EXECUTION_ID = ?]; This connection has been closed.; nested exception is org.postgresql.util.PSQLException: This connection has been closed.

after this error the composed task got restarted from 0

Interesting thing is that when we have the batch job without parallel flows and throws the exception - the whole composed task stops, which is good, but in this case the batch job has the parallel flows instead of steps and then after this exception we got the troubles, is it expected? Cause I can't find the docs about it, is there anything I can configure?

[cppwfs]

Can you share the log where this occurred?