Search results
Results From The WOW.Com Content Network
In a non-RAC Oracle database, a single instance accesses a single database. The database consists of a collection of data files , control files, and redo logs located on disk . The instance comprises the collection of Oracle-related memory and background processes that run on a computer system.
Automatic Storage Management (ASM) simplifies administration of Oracle-related files by allowing the administrator to reference disk groups (rather than individual disks and files) which ASM manages. ASM extends the Oracle Managed Files (OMF) functionality [ 1 ] that also includes striping and mirroring to provide balanced and secure storage.
It provides the basic clustering services at the operating-system level that enable Oracle Database software to run in clustering mode. In earlier versions of Oracle (release 9i and earlier), RAC required a vendor-supplied clusterware like Sun Cluster or Veritas Cluster Server (except when running on Linux or on Microsoft Windows).
Oracle Database 11g Release 2 11.2.0.1 September 2009 [22] 11.2.0.4 August 2013 Edition-Based Redefinition, Data Redaction, Hybrid Columnar Compression, Cluster File System, Golden Gate Replication, Database Appliance: Oracle Database 11g Release 1 11.1.0.6 September 2007 11.1.0.7
File system Creator Year of introduction Original operating system; DECtape: DEC: 1964 PDP-6 Monitor OS/3x0 FS: IBM: 1964 OS/360: Level-D DEC: 1968 TOPS-10: George 3 ICT (later ICL) 1968 George 3: Version 6 Unix file system (V6FS) Bell Labs: 1972 Version 6 Unix: RT-11 file system DEC: 1973 RT-11: Disk Operating System GEC: 1973 Core Operating ...
The Windows NT port was never released as Oracle could not obtain support on the BLISS compiler necessary for this platform. In order to port Rdb to these platforms, an abstraction layer named the Common Operating System Interface (COSI) was implemented to isolate the database from the underlying operating system. [16]
An fsync request commits modified data immediately to stable storage. fsync-heavy workloads (like a database or a virtual machine whose running OS fsyncs frequently) could potentially generate a great deal of redundant write I/O by forcing the file system to repeatedly copy-on-write and flush frequently modified parts of trees to storage.
It is a security system that provides access control and auditing functionality for the z/OS and z/VM operating systems. RACF was introduced in 1976. [1] Originally called RACF it was renamed to z/OS Security Server (RACF), although most mainframe folks [who?] still refer to it as RACF. [2] Its main features are: [1]