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Streamsets JDBC Lookup Can't read postgresql sequence Nextval

Hi All,

I am trying fetch nextval of postgresql sequence in streamsets jdbc lookup stage, But it give mes below error. " com.google.common.util.concurrent.UncheckedExecutionException: com.streamsets.pipeline.api.base.OnRecordErrorException: JDBC_02 - Exception executing query: 'select nextval('ann."seq_fundid"') as fund_id;' - 'ERROR: cannot execute nextval() in a read-only transaction' "

However I can eliminate this error by unchecking " Enforce read-only connection" option on advanced tab

But I am not sure about the risk of unchecking it . Can anyone address risk of disabling read-only connection or any alternate solution to this ?