Disable schema-update for Oracle #176

Job	Run time
Create snapshot	34s
Run examples in 'session-example' on MySQL	1m 15s
Test with MariaDB	38s
Run examples in 'session-example' on PostgreSQL	1m 8s
Release	0s
Test with MySQL	40s
Run examples in 'native-sql-example' on PostgreSQL	1m 15s
Test with PostgreSQL	28s
Test with Java 11	39s
Test with MSSQLServer	37s
Test with Java 17	38s
Test with CockroachDB	33s
Test with Java 20	36s
Test with Db2	38s
Test with Java 21	35s
Test with Oracle	35s
Test with Java 22	47s
Test with Java 23-ea	48s
Test with Java 24-ea	55s
	13m 19s

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