Tables or columns from schemas or fields with long names should be shortened for Oracle

When using a schema or a field with a very long name (>30 chars), the table or column in Oracle is not using an appropriately shortened name which leads to the error below.

The table and column name show be shortened below 30 chars, with no collision possible, but still be readable.

ERROR [MCFConnectionInterceptor] Error occurred creating ManagedConnection for org.apache.geronimo.connector.outbound.ConnectionInfo@bec438
org.nuxeo.ecm.core.storage.StorageException: java.sql.SQLException: ORA-00972: identifier is too long
at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapper.createDatabase(JDBCMapper.java:133)
at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCBackend.newMapper(JDBCBackend.java:156)
at org.nuxeo.ecm.core.storage.sql.RepositoryImpl.getConnection(RepositoryImpl.java:335)
...
Caused by: java.sql.SQLException: ORA-00972: identifier is too long
...
at oracle.jdbc.driver.OracleStatement.execute(OracleStatement.java:1552)
at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapper.createTables(JDBCMapper.java:199)
at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapper.createDatabase(JDBCMapper.java:130)