After creating a testuser I am unable to remove the user again. last lines of error: [update o_Project set owner=null where owner=?] at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) at org.hsqldb.jdbc.JDBCPreparedStatement.(Unknown Source) at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source) at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:308) at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:90) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ... 97 more Caused by: org.hsqldb.HsqlException: user lacks privilege or object not found: OWNER at org.hsqldb.error.Error.error(Unknown Source) at org.hsqldb.error.Error.error(Unknown Source) at org.hsqldb.ParserDQL.XreadTargetSpecification(Unknown Source) at org.hsqldb.ParserDML.readSetClauseList(Unknown Source) at org.hsqldb.ParserDML.compileUpdateStatement(Unknown Source) at org.hsqldb.ParserCommand.compilePart(Unknown Source) at org.hsqldb.ParserCommand.compileStatement(Unknown Source) at org.hsqldb.Session.compileStatement(Unknown Source) at org.hsqldb.StatementManager.compile(Unknown Source) at org.hsqldb.Session.execute(Unknown Source) ... 103 more