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Oracle Automatic Storage Management Cluster File System (ACFS)
Oracle Automatic Storage Management Cluster File System (Oracle ACFS) is a new
multi-platform, scalable file system and storage management design that extends
Oracle Automatic Storage Management (Oracle ASM) technology to support all
application data. Oracle ACFS provides dynamic file system resizing, and improved
performance using the distribution, balancing and striping technology across all
available storage, and provides storage reliability through Oracle ASM's mirroring and
parity protection.
Oracle ACFS is available for Linux. It is not available for UNIX platforms at the time of
this release.
Cluster Verification Utility Fixup Scripts and Grid Infrastructure Checks
Cluster Verification Utility (CVU) has the following new features:
■ CVU can generate shell scripts (Fixup scripts) that perform the system
configuration that is required for a successful installation, in addition to
identifying system issues that can cause installation failures.
■ CVU provides additional checks to address install, configuration and operational
issues.
■ CVU is automatically called by OUI to verify prerequisites, and will prompt you to
create fixup scripts to correct many system configuration issues that prevent
installation.
Database Agent and Listeners
DBCA no longer sets the value for LOCAL_LISTENER. When Oracle Clusterware
starts the database resource, it updates the instance parameters. The LOCAL_
LISTENER is set to the virtual IP endpoint of the local node listener address. You
should not modify the setting for LOCAL_LISTENER. New installation instances only
register with Single Client Access Name (SCAN) listeners as remote listeners. SCANs
are virtual IP addresses assigned to the cluster, rather than to individual nodes, so
cluster members can be added or removed without requiring updates of clients served
by the cluster. Upgraded databases will continue to register with all node listeners,
and additionally with the SCAN listeners.
Daylight Savings Time Upgrade of Timestamp with Timezone Data Type
When time zone version files are updated due to Daylight Saving Time changes,
TIMESTAMP WITH TIMEZONE (TSTZ) data could become stale. In previous releases,
database administrators ran the SQL script
utltzuv2.sql
to detect TSTZ data affected
by the time zone version changes and then had to carry out extensive manual
procedures to update the TSTZ data.
TSTZ data is updated transparently with very minimal manual procedures using
newly provided DBMS_DST PL/SQL packages. In addition, there is no longer a need
for clients to patch their time zone data files.
See Also: Oracle Database Upgrade Guide for information about
preparing to upgrade Timestamp with Time Zone data, Oracle
Database Globalization Support Guide for information about how to
upgrade the Time Zone file and Timestamp with Time Zone data, and
Oracle Call Interface Programmer's Guide for information about
performance effects of clients and servers operating with different
versions of Time Zone files
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