问题描述：最近在搭建数据同步框架后，对源库数据进行同步，观察发现，每天凌晨Debezium连接器会报错，查看数据库日志发现对应时段数据库在进行重建分区索引，但是白天重建分区索引却没有报错
报错内容：
org.apache.kafka.connect.errors.ConnectException: An exception occurred in the change event producer. This connector will be stopped.
at io.debezium.pipeline.ErrorHandler.setProducerThrowable(ErrorHandler.java:42)
at io.debezium.connector.oracle.logminer.LogMinerStreamingChangeEventSource.execute(LogMinerStreamingChangeEventSource.java:208)
at io.debezium.pipeline.ChangeEventSourceCoordinator.streamEvents(ChangeEventSourceCoordinator.java:140)
at io.debezium.pipeline.ChangeEventSourceCoordinator.lambda$start$0(ChangeEventSourceCoordinator.java:113)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLException: ORA-01327: failed to exclusively lock system dictionary as required by build
ORA-06512: at "SYS.DBMS_LOGMNR_INTERNAL", line 6003
ORA-06512: at "SYS.DBMS_LOGMNR_INTERNAL", line 6101
ORA-06512: at "SYS.DBMS_LOGMNR_D", line 12
ORA-06512: at line 1
at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:494)
at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:446)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1054)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:623)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:252)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:612)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:223)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:56)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:907)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1119)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3780)
at oracle.jdbc.driver.T4CCallableStatement.executeInternal(T4CCallableStatement.java:1300)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3887)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4230)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1079)
at io.debezium.connector.oracle.logminer.LogMinerHelper.executeCallableStatement(LogMinerHelper.java:691)
at io.debezium.connector.oracle.logminer.LogMinerHelper.buildDataDictionary(LogMinerHelper.java:97)
at io.debezium.connector.oracle.logminer.LogMinerStreamingChangeEventSource.initializeRedoLogsForMining(LogMinerStreamingChangeEventSource.java:243)
at io.debezium.connector.oracle.logminer.LogMinerStreamingChangeEventSource.execute(LogMinerStreamingChangeEventSource.java:168) ... 7 more
Caused by: Error : 1327, Position : 0, Sql = BEGIN DBMS_LOGMNR_D.BUILD (options => DBMS_LOGMNR_D.STORE_IN_REDO_LOGS); END;,
OriginalSql = BEGIN DBMS_LOGMNR_D.BUILD (options => DBMS_LOGMNR_D.STORE_IN_REDO_LOGS); END;,
Error Msg = ORA-01327: failed to exclusively lock system dictionary as required by build
ORA-06512: at "SYS.DBMS_LOGMNR_INTERNAL", line 6003
ORA-06512: at "SYS.DBMS_LOGMNR_INTERNAL", line 6101
ORA-06512: at "SYS.DBMS_LOGMNR_D", line 12
ORA-06512: at line 1 at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:498) ... 25 more
初步解答思路：初步尝试Oracle数据库重建分区索引的相关任务时间后延，但是仍然在开始重建分区索引后报错
Debezium版本：1.5
Kafka版本：2.6.1
zookeeper：3.6.2
Oracle版本源库以及目标库均为11g
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