As mentioned in the log output i open a ticket here

Bug report

What Debezium connector do you use and what version?

debezium-server-dist 2.5.2.Final

What is the captured database version and mode of depoyment?

Database Version: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.21.0.0.0

What behaviour do you expect?

DDL Statement should be parsed correctly

What behaviour do you see?

Caused by: io.debezium.text.ParsingException: DDL statement couldn't be parsed. Please open a Jira issue with the statement 'ALTER TABLE "AB01"."SMOSTAMM" ADD CONSTRAINT "CC_SMOSTAMM_KRAB" CHECK ((KRAB >= 0. ) AND (KRAB <= 100. )) ENABLE;'
no viable alternative at input 'ADD CONSTRAINT "CC_SMOSTAMM_KRAB" CHECK ((KRAB >= 0.'
    at io.debezium.antlr.ParsingErrorListener.syntaxError(ParsingErrorListener.java:43)
    at org.antlr.v4.runtime.ProxyErrorListener.syntaxError(ProxyErrorListener.java:41)
    at org.antlr.v4.runtime.Parser.notifyErrorListeners(Parser.java:543)
    at org.antlr.v4.runtime.DefaultErrorStrategy.reportNoViableAlternative(DefaultErrorStrategy.java:310)
    at org.antlr.v4.runtime.DefaultErrorStrategy.reportError(DefaultErrorStrategy.java:136)
    at io.debezium.ddl.parser.oracle.generated.PlSqlParser.alter_table(PlSqlParser.java)
    at io.debezium.ddl.parser.oracle.generated.PlSqlParser.unit_statement(PlSqlParser.java:2494)
    at io.debezium.ddl.parser.oracle.generated.PlSqlParser.sql_script(PlSqlParser.java:2124)
    at io.debezium.connector.oracle.antlr.OracleDdlParser.parseTree(OracleDdlParser.java:73)
    at io.debezium.connector.oracle.antlr.OracleDdlParser.parseTree(OracleDdlParser.java:32)
    at io.debezium.antlr.AntlrDdlParser.parse(AntlrDdlParser.java:78)
    at io.debezium.connector.oracle.antlr.OracleDdlParser.parse(OracleDdlParser.java:68)
    at io.debezium.connector.oracle.OracleSchemaChangeEventEmitter.emitSchemaChangeEvent(OracleSchemaChangeEventEmitter.java:84)
    at io.debezium.pipeline.EventDispatcher.dispatchSchemaChangeEvent(EventDispatcher.java:379)
    at io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor.handleSchemaChange(AbstractLogMinerEventProcessor.java:773)
    at io.debezium.connector.oracle.logminer.processor.memory.MemoryLogMinerEventProcessor.handleSchemaChange(MemoryLogMinerEventProcessor.java:176)
    at io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor.processRow(AbstractLogMinerEventProcessor.java:368)
    at io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor.processResults(AbstractLogMinerEventProcessor.java:314)
    at io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor.process(AbstractLogMinerEventProcessor.java:235)
    at io.debezium.connector.oracle.logminer.LogMinerStreamingChangeEventSource.execute(LogMinerStreamingChangeEventSource.java:248)
    ... 9 more