# \[WARN \]\[logstash.inputs.jdbc \] Exception when executing JDBC query {:exception=\>#\<Sequel::DatabaseError: Java::OrgLogstash::MissingConverterException: Missing Converter handling for full class name=org.postgresql.util.PGobject, simple name=PGobject\>}

**URL:** https://discuss.elastic.co/t/warn-logstash-inputs-jdbc-exception-when-executing-jdbc-query-exception-sequel-java-missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/200407
**Category:** Logstash
**Created:** [September 20, 2019, 11:47am UTC](https://discuss.elastic.co/t/warn-logstash-inputs-jdbc-exception-when-executing-jdbc-query-exception-sequel-java-missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/200407 "2019-09-20T11:47:34Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![abu](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@abu](https://discuss.elastic.co/u/abu)
#### Post date: [September 20, 2019, 11:47am UTC](https://discuss.elastic.co/t/warn-logstash-inputs-jdbc-exception-when-executing-jdbc-query-exception-sequel-java-missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/200407/1 "2019-09-20T11:47:34Z")

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I want fetch data from postgresql DB that contain jsonb format input to logstash and output to elasticsearch

but I get the warning message and didn't proceed next step

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### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [September 20, 2019, 1:50pm UTC](https://discuss.elastic.co/t/warn-logstash-inputs-jdbc-exception-when-executing-jdbc-query-exception-sequel-java-missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/200407/2 "2019-09-20T13:50:23Z")

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See [here](https://discuss.elastic.co/t/missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/163338).

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 18, 2019, 1:50pm UTC](https://discuss.elastic.co/t/warn-logstash-inputs-jdbc-exception-when-executing-jdbc-query-exception-sequel-java-missing-converter-handling-for-full-class-name-org-postgresql-util-pgobject-simple-name-pgobject/200407/3 "2019-10-18T13:50:30Z")

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