I change the Entity name "MsgHistory" to "LinedMsgHistory" and add Some attribute. And Commit two days ago, But two days later the Mendix Server is not Operate and Can't be restart. I renamed the changed tables revert name. Still Can not start the server. What makes this problem occur, How to recover this DB Server. (ex, re-synchronize the database about now mendix setting) Mendix error msg : M2EE: Anerror occured while executing action 'Execute DDL commands'. com.mendixs.m2ee.api.AdminException: Executing DDL commands failed. at com.mendix.basis.component.internal.LocalComponentImpl.executeDDLCommands(LocalComponentImpl.scala:113) Caused by: com.mendix.basis.connectionbus.ConnectionBusExceptioin: Error(SQL State: 42000, Error Code: 904) on executing: ALTER TABLE "JBCOMMONMODULE$LINKEDHISTORY" DROP COLUMN "MSGCD" Successful changes were not rolled back. We advise you to restore the database from a backup before trying to synchronize again. at com.mendix.connectionbus.modelsynchronization.DdlcommandExecutor.handleCommandExecutionException(DdlCommandExecutor.scala:142) Caused by: java.sql.SQLSyntaxErrorExceptioin: ORA-00904: "MSGCD": invalid indentifier https://doc.oracle.com/error-help/db/ora-00904 ...
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