Oracle version: 11.2.0.3

configuration of the Debezium Oracle connector:

{
"name": "connector_name",
"config":

{ "connector.class" : "io.debezium.connector.oracle.OracleConnector", "tasks.max" : "1", "database.server.name" : "database", "database.hostname" : "ip address", "database.port" : "port", "database.user" : "xstrm", "database.password" : "********", "database.out.server.name" : "dbzxout", "database.dbname" : "database", "database.oracle.version": "11", "database.tablename.case.insensitive": "false", "snapshot.mode": "schema_only", "database.history.kafka.bootstrap.servers" : "localhost:9092", "database.history.kafka.topic": "schema-changes.database" }

}

Error:

[2020-07-30 11:03:22,412] INFO Snapshot step 5 - Reading structure of captured tables (io.debezium.relational.RelationalSnapshotCh
angeEventSource:122)
[2020-07-30 11:03:28,346] INFO Snapshot - Final stage (io.debezium.pipeline.source.AbstractSnapshotChangeEventSource:79)
[2020-07-30 11:03:28,348] ERROR Producer failure (io.debezium.pipeline.ErrorHandler:31)
java.lang.IllegalArgumentException: The primary key cannot reference a non-existant column'SYS_NC00004$' in table 'EXFSYS.RLM$PARS
EDCOND'
at io.debezium.relational.TableEditorImpl.setPrimaryKeyNames(TableEditorImpl.java:133)
at io.debezium.relational.TableImpl.edit(TableImpl.java:116)
at io.debezium.relational.Tables.editTable(Tables.java:334)
at io.debezium.connector.oracle.OracleConnection.readSchema(OracleConnection.java:114)
at io.debezium.connector.oracle.OracleSnapshotChangeEventSource.readTableStructure(OracleSnapshotChangeEventSource.java:19
8)
at io.debezium.relational.RelationalSnapshotChangeEventSource.doExecute(RelationalSnapshotChangeEventSource.java:123)
at io.debezium.pipeline.source.AbstractSnapshotChangeEventSource.execute(AbstractSnapshotChangeEventSource.java:63)
at io.debezium.pipeline.ChangeEventSourceCoordinator.lambda$start$0(ChangeEventSourceCoordinator.java:96)
at java.util.concurrent.Executors$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)

Tell me, please, what could be the reason for this error?