Upgrade from 19.0.3-legacy to 20.0.1 with Oracle 11g

Area

storage

Describe the bug

We are running Keycloak 19.0.3-legacy (WildFly) with Oracle 11g (11.2.0.4) and trying to upgrade to Keycloak 20.0.1 (Quarkus).

The Keycloak 20.0.1 crashes on start with:

[org.hibernate.SQL] (main) select migrationm0_.ID as id1_39_, migrationm0_.UPDATE_TIME as update_time2_39_, migrationm0_.VERSION as version3_39_ from MIGRATION_MODEL migrationm0_ order by migrationm0_.UPDATE_TIME DESC fetch first ? rows only
 2022-11-11 11:21:54,728 DEBUG [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (main) could not extract ResultSet [n/a]: java.sql.SQLSyntaxErrorException: ORA-00933: SQL command not properly ended
...
 Caused by: Error : 933, Position : 191, Sql = select migrationm0_.ID as id1_39_, migrationm0_.UPDATE_TIME as update_time2_39_, migrationm0_.VERSION as version3_39_ from MIGRATION_MODEL migrationm0_ order by migrationm0_.UPDATE_TIME DESC fetch first :1  rows only, OriginalSql = select migrationm0_.ID as id1_39_, migrationm0_.UPDATE_TIME as update_time2_39_, migrationm0_.VERSION as version3_39_ from MIGRATION_MODEL migrationm0_ order by migrationm0_.UPDATE_TIME DESC fetch first ? rows only, Error Msg = ORA-00933: SQL command not properly ended

 	at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:498)
 	... 74 more

 2022-11-11 11:21:54,731 WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (main) SQL Error: 933, SQLState: 42000
 2022-11-11 11:21:54,731 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (main) ORA-00933: SQL command not properly ended

Looks like according to the https://www.keycloak.org/server/db Oracle 11g is not supported anymore?

We tried setting the Hibernate ORM dialect to

quarkus.hibernate-orm.dialect=org.hibernate.dialect.Oracle10gDialect

without any success.

We also tried adding our ojdbc.jar to the custom built Docker container and running kc.sh build with quarkus.properties similar to

quarkus.datasource.db-kind=other
quarkus.datasource.jdbc.driver=oracle.jdbc.driver.OracleDriver
quarkus.datasource.jdbc.url=jdbc:oracle:thin:@192.168.1.12:1521/ORCL_SVC
quarkus.datasource.username=scott
quarkus.datasource.password=tiger

https://quarkus.io/guides/datasource#other-databases

also without any success.

Is there a way to run Keycloak 20.0.1 with Oracle 11g or are we stuck on Keycloak 19.0.3-legacy now? (Upgrading Oracle is sadly not an option for us.)

Version

20.0.1

Expected behavior

Keycloak 20.0.1 runs with Oracle 11g

Actual behavior

Keycloak 20.0.1 crashes

How to Reproduce?

Run Keycloak 20.0.1 with Oracle 11g.

Anything else?

Maybe related #10749

[trailhuntervodafone]

@pedroigor : Thank you for your answer. Here https://www.keycloak.org/2022/02/dbs.html i read: “As such we are not currently planning on offering any second class databases long term, and rather phase out support for MySQL, MariaDB, SQL Server, and Oracle over time.” what does mean long term, how long "second class databases " will be supported?

[wkruse]

@trailhuntervodafone Thank you for the hint! I can confirm, that kc.sh start -Dkc.db-dialect=org.hibernate.dialect.Oracle10gDialect works.