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MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this

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  • i am getting Hibernate error
    via Stack Overflow by Raji
    • java.sql.SQLException: Got error 157 'Unknown error code' from NDBCLUSTER] at org.quartz.impl.jdbcjobstore.JobStoreSupport.findFailedInstances( at org.quartz.impl.jdbcjobstore.JobStoreSupport.clusterCheckIn( at org.quartz.impl.jdbcjobstore.JobStoreSupport.doCheckin( at org.quartz.impl.jdbcjobstore.JobStoreSupport$ClusterManager.manage( at org.quartz.impl.jdbcjobstore.JobStoreSupport$ Caused by: java.sql.SQLException: Got error 157 'Unknown error code' from NDBCLUSTER at com.mysql.jdbc.SQLError.createSQLException( at com.mysql.jdbc.MysqlIO.checkErrorPacket( at com.mysql.jdbc.MysqlIO.nextRowFast( at com.mysql.jdbc.MysqlIO.nextRow( at com.mysql.jdbc.MysqlIO.readSingleRowSet( at com.mysql.jdbc.MysqlIO.getResultSet( at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate( at com.mysql.jdbc.MysqlIO.readAllResults( at com.mysql.jdbc.MysqlIO.sqlQueryDirect( at com.mysql.jdbc.ConnectionImpl.execSQL( at com.mysql.jdbc.PreparedStatement.executeInternal( at com.mysql.jdbc.PreparedStatement.executeQuery( at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery( at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectSchedulerStateRecords( at org.quartz.impl.jdbcjobstore.JobStoreSupport.findFailedInstances(

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