Unable to extractFieldwith SMT transformation in Oracle database - oracle

Question

I'm not able to perform SMT transformation "ExtractField" in order to extract field from key struct to a simple long value with an Oracle database. It works fine with a Postgres database.
I tried to use "ReplaceField" SMT to rename the key and it works fine. I suspect a problem in the class "org.apache.kafka.connect.transforms.ExtractField" on schema handling to get the field. Schema handling seems to work differently between "ReplaceField" and "ExtractField".
Oracle database version: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.8.0.0.0
Debezium connect: 1.6
Kafka version: 2.7.0
Instanclient basic (Oracle client and drivers): 21.3.0.0.0
I got an "Unknown field ID_MYTABLE":
org.apache.kafka.connect.errors.ConnectException: Tolerance exceeded
in error handler at
org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:206)
at
org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:132)
at
org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:50)
at
org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:339)
at
org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:264)
at
org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:185)
at
org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:234)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834) Caused by:
java.lang.IllegalArgumentException: Unknown field: ID_MYTABLE
org.apache.kafka.connect.transforms.ExtractField.apply(ExtractField.java:65)
at
org.apache.kafka.connect.runtime.TransformationChain.lambda$apply$0(TransformationChain.java:50)
at
org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndRetry(RetryWithToleranceOperator.java:156)
at
org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:190)
... 11 more
Here is my configuration of my Kafka connector:
{
"name": "oracle-connector",
"config": {
"connector.class": "io.debezium.connector.oracle.OracleConnector",
"tasks.max": "1",
"database.server.name": "serverName",
"database.user": "c##dbzuser",
"database.password": "dbz",
"database.url": "jdbc:oracle:thin:...",
"database.dbname": "dbName",
"database.pdb.name": "PDBName",
"database.connection.adapter": "logminer",
"database.history.kafka.bootstrap.servers": "kafka:9092",
"database.history.kafka.topic": "schema-changes.data",
"schema.include.list": "mySchema",
"table.include.list": "mySchema.myTable",
"log.mining.strategy": "online_catalog",
"snapshot.mode": "initial",
"key.converter": "org.apache.kafka.connect.json.JsonConverter",
"key.converter.schemas.enable": "false",
"value.converter": "io.confluent.connect.avro.AvroConverter",
"value.converter.schemas.enable": "true",
"value.converter.schema.registry.url": "http://schema-registry:8081",
"transforms": "unwrap,route,extractField",
"transforms.extractField.type": "org.apache.kafka.connect.transforms.ExtractField$Key",
"transforms.extractField.field": "ID_MYTABLE",
"transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState",
"transforms.route.type": "org.apache.kafka.connect.transforms.RegexRouter",
"transforms.route.regex": "([^.]+)\\.([^.]+)\\.([^.]+)",
"transforms.route.replacement": "$1_$2_$3"
}
}