Cause
SGA_TARGET or MEMORY_TARGET set with DB_BLOCK_BUFFERS set.
Action
Do not set SGA_TARGET, MEMORY_TARGET or use new cache parameters, and do not use DB_BLOCK_BUFFERS which is an old cache parameter.
Oracle 26ai
ORA-00825
Error Message
cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set