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    Expert tip

    Try downgrading PostgresSQL server to 9.5 or update your PostgresSQL driver to 9.4-1211 with the following command: <postgresql.version>9.4.1211</postgresql.version>

Solutions on the web

via Sakai JIRA by Jonathan Blood, 2 years ago
ERROR: insert or update on table "epersongroup2workspaceitem" violates foreign key constraint "epersongroup2workspaceitem_workspace_item_id_fkey" Detail: Key (workspace_item_id)=(-1) is not present in table "workspaceitem".
via Sakai JIRA by Jonathan Blood, 1 year ago
ERROR: insert or update on table "epersongroup2workspaceitem" violates foreign key constraint "epersongroup2workspaceitem_workspace_item_id_fkey" Detail: Key (workspace_item_id)=(-1) is not present in table "workspaceitem".
via Google Groups by wang jiahui, 8 months ago
ERROR: duplicate key violates uni que constraint "bitstreamformatregistry_short_description_key"
via Google Groups by Van Ly, 8 months ago
ERROR: duplicate key violates unique constra\ int "metadatafieldregistry_pkey"
via Sakai JIRA by Ivan Masár, 1 year ago
ERROR: update or delete on table "item" violates foreign key constraint "bi_5_dmap_item_id_fkey" on table "bi_5_dmap" Detail: Key (item_id)=(4742) is still referenced from table "bi_5_dmap".
via Sakai JIRA by Ivan Masár, 2 years ago
ERROR: update or delete on table "item" violates foreign key constraint "bi_5_dmap_item_id_fkey" on table "bi_5_dmap" Detail: Key (item_id)=(4742) is still referenced from table "bi_5_dmap".
org.postgresql.util.PSQLException: ERROR: insert or update on table "epersongroup2workspaceitem" violates foreign key constraint "epersongroup2workspaceitem_workspace_item_id_fkey" Detail: Key (workspace_item_id)=(-1) is not present in table "workspaceitem". at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1531) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1313) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:188) at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:452) at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:354) at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:308) at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102) at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102) at org.dspace.storage.rdbms.DatabaseManager.execute(DatabaseManager.java:1429) at org.dspace.storage.rdbms.DatabaseManager.update(DatabaseManager.java:781) at org.dspace.eperson.Supervisor.add(Supervisor.java:191) at org.dspace.app.webui.servlet.admin.SuperviseServlet.addSupervisionOrder(SuperviseServlet.java:242) at org.dspace.app.webui.servlet.admin.SuperviseServlet.doDSPost(SuperviseServlet.java:111) at org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:147) at org.dspace.app.webui.servlet.DSpaceServlet.doPost(DSpaceServlet.java:105) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.dspace.app.webui.filter.AdminOnlyFilter.doFilter(AdminOnlyFilter.java:103) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:112) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:429) at org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpAprProtocol.java:384) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:679)