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Physical standby databases can function either in managed-recovery mode or in read-only mode, but not in both modes at the same time (unless the databases are at Oracle Database 11.1 or higher and the Active Data Guard option is licensed - see below). The standby makes use of "Redo Apply" technology.
Oracle Database 23ai: 23.4.0 On May 2, 2024, Oracle Database 23ai [10] was released on Oracle Cloud Infrastructure (OCI) as cloud services, including OCI Exadata Database Service, OCI Exadata Database Cloud@Customer, and OCI Base Database Service. It is also available in Always Free Autonomous Database.
It is started as ‘restart’ mode after unplanned shutdown. In reboot mode it ‘auto’ starts all the resources under its management. In restart mode it prevails the previous state and brings back the resources to it previous state before shutdown; Manages the Oracle Cluster Registry and stores the current known state in the Oracle Cluster ...
ORACLE also supports a Quiesce command since version 9i which allows existing users to continue to use resources but disallows new resources being made available. [ 5 ] SYBASE ASE 12.0 and above support a QUIESCE DATABASE command that prevents any process from running commands that write to the transaction log.
Oracle TimesTen In-Memory Database is an in-memory, relational database management system with persistence and high availability. Originally designed and implemented at Hewlett-Packard labs in Palo Alto, California , TimesTen spun out into a separate startup in 1996 and was acquired by Oracle Corporation in 2005.
Starting from Oracle database 11g, iSqlplus (web based) and sqlplus GUI no longer ship with Oracle database software. [7] The command-line SQL Plus interface continues in use, mostly [ citation needed ] for non-interactive scripting or for administrative purposes.
Thus, Oracle NoSQL Database applications can tolerate failures of nodes within a shard and also multiple failures of nodes in distinct shards. Proper placement of masters and replicas on server hardware (racks and interconnect switches) by Oracle NoSQL Database is intended to increase availability on commodity servers.
General purpose database that has high data processing speeds in main-memory alone. It comes with high-availability, replication and scalability features; three interfaces (including Direct Access Mode and Direct Access API Mode) as well as conventional client/server protocols such as TCP/IP and IPC for more complex database operations.