rac各节点实例需设置为相同的一些参数
RAC Parameters That Require Identical Settings
? ACTIVE_INSTANCE_COUNT
? ARCHIVE_LAG_TARGET
? COMPATIBLE
? CLUSTER_DATABASE/CLUSTER_DATABASE_INSTANCES
? CONTROL_FILES
? DB_BLOCK_SIZE
? DB_DOMAIN
? DB_FILES
? DB_NAME
? DB_RECOVERY_FILE_DEST/DB_RECOVERY_FILE_DEST_SIZE
? DB_UNIQUE_NAME
? PARALLEL_EXECUTION_MESSAGE_SIZE
? REMOTE_LOGIN_PASSWORD_FILE
? RESULT_CACHE_MAX_SIZE ----------Disabling the result cache on some instances may lead to incorrect results.
? UNDO_MANAGEMENT
dml_locks
