Yasin Koyuncu ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *created* an issue Hibernate Search ( https://hibernate.atlassian.net/browse/HSEARCH?atlOrigin=eyJpIjoiNmVlNzE4... ) / Improvement ( https://hibernate.atlassian.net/browse/HSEARCH-4716?atlOrigin=eyJpIjoiNmV... ) HSEARCH-4716 ( https://hibernate.atlassian.net/browse/HSEARCH-4716?atlOrigin=eyJpIjoiNmV... ) JDBC Batch performance affected by event box sequence generator ( https://hibernate.atlassian.net/browse/HSEARCH-4716?atlOrigin=eyJpIjoiNmV... ) Issue Type: Improvement Affects Versions: 6.1.6.Final Assignee: Unassigned Components: mapper-orm-coordination-outbox-polling Created: 12/Oct/2022 01:01 AM Priority: Minor Reporter: Yasin Koyuncu ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) We are using jdbc batching and I noticed the bottleneck was these queries which were executed too often: select nextval ('hsearch_outbox_event_generator') Then I’ve looked a bit in the code and found this entity mapping: in org.hibernate.search.mapper.orm.coordination.outboxpolling.event.impl. OutboxPollingOutboxEventAdditionalJaxbMappingProducer public static final String ENTITY_DEFINITION = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<hibernate-mapping>\n" + " <class name=\"" + CLASS_NAME + "\" entity-name=\"" + ENTITY_NAME + "\" table=\"" + TABLE_NAME + "\">\n" + " <id name=\"id\" type=\"long\">\n" + " <generator class=\"org.hibernate.id.enhanced.SequenceStyleGenerator\">\n" + " <param name=\"sequence_name\">" + TABLE_NAME + "_GENERATOR</param>\n" + " <param name=\"table_name\">" + TABLE_NAME + "_GENERATOR</param>\n" + " <param name=\"initial_value\">1</param>\n" + " <param name=\"increment_size\">1</param>\n" + " </generator>\n" + " </id>\n" + " <property name=\"entityName\" type=\"string\" length=\"256\" nullable=\"false\" />\n" + " <property name=\"entityId\" type=\"string\" length=\"256\" nullable=\"false\" />\n" + " <property name=\"entityIdHash\" type=\"integer\" index=\"entityIdHash\" nullable=\"false\" />\n" + " <property name=\"payload\" type=\"materialized_blob\" nullable=\"false\" />\n" + " <property name=\"retries\" type=\"integer\" nullable=\"false\" />\n" + " <property name=\"processAfter\" type=\"Instant\" index=\"processAfter\" nullable=\"true\" />\n" + " <property name=\"status\" index=\"status\" nullable=\"false\">\n" + " <type name=\"org.hibernate.type.EnumType\">\n" + " <param name=\"enumClass\">" + OutboxEvent.Status.class.getName() + "</param>\n" + " </type>\n" + " </property>\n" + " </class>\n" + "</hibernate-mapping>\n"; In order to make less calls we can increase the following value: {{ <param name=\"increment_size\">1</param>\n"}} Is it possible to make this configurable? Thx in advance, Yasin ( https://hibernate.atlassian.net/browse/HSEARCH-4716#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4716#add-comment?atlOrigin... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100208- sha1:399748d )