Is it difficult to transition (migrate) from Single Instance to Oracle RAC?
If the cluster and the cluster software are not present, these components must be installed and configured. The Oracle RAC option must be added using the Oracle Universal Installer, which necessitates the existing DB instance must be shut down. There are no changes necessary on the user data within the database. However, a shortage of freelists and freelist groups can causecontention with header blocks of tables and indexes as multiple instances vie for the same block. This may cause a performance problem and require data partitioning. However, the need for these changes should be rare. Recommendation: apply automatic space segment management to perform these changes automatically. The free space management will replace the freelists and freelist groups and is better. The database requires one Redo thread and one Undo tablespace for each instance, which are easily added with SQL commands or with Enterprise Manager tools. NOTE: With ORacle RAC 11g Release 2, you do not neet to pre-creat
