ORA-19624, ORA-19870 , ORA-19505, ORA-27037 errors while creating database with DBCA.
This issue is reported in Bug 5141453. The database templates General Purpose, Transaction Procession, and DataWarehouse are expected to be used only with 8k block size as the seed database is shipped at 8k block size
From Bug 5141453, development indicates that DB_BLOCK_SIZE cannot be changed for the General Purpose, Transaction Procession and DataWarehouse templates as the seed database is using 8k block size. You should create a custom database to get a different block size. References Bug 5141453 – DBCA – CREATE DATABASE SCRIPTS – LOOKING FOR SEED_DATABASE_8K.DFB Keywords CUSTOM~DATABASE; DB_BLOCK_SIZE; DBCA;