What is Oracle Trace File Analyzer?
Oracle Trace File Analyzer (TFA) provides a number of diagnostic tools in a single bundle, making it easy to gather diagnostic information about the Oracle database and clusterware, which in turn helps with problem resolution when dealing with Oracle Support.
How do you analyze TFA logs?
Use the tfactl analyze command to obtain analysis of your system by parsing the database, Oracle ASM, and Oracle Grid Infrastructure alert logs, system message logs, OSWatcher Top, and OSWatcher Slabinfo files. Use the tfactl changes command to view the changes detected by Oracle Trace File Analyzer.
What is TFA in Oracle RAC?
Trace File Analyzer (TFA) Collector simplifies diagnostic data collection on Oracle Cluster Ready Services (CRS), Oracle Grid Infrastructure (Oracle GI), and Oracle RAC systems. TFA behaves in a similar manner to the ion utility packaged with Oracle Clusterware. Both tools collect and package diagnostic data.
What is TAF in Oracle RAC?
The interconnect is a physical network used as a means of communication between each node of the cluster. After Oracle RAC is installed, the Transparent Application Failover (TAF) feature can be configured to ensure the highest levels of availability. TAF compliments all levels of the availability hierarchy.
Where is Oracle TFA located?
If you have installed Oracle Trace File Analyzer with Oracle Grid Infrastructure, then TFA_HOME will be GRID_HOME/tfa/hostname/tfa_home . If Oracle Grid Infrastructure is installed, then tfactl is also installed in the GRID_HOME/bin directory.
What is TFA collector?
Trace File Analyzer (TFA) Collector simplifies diagnostic data collection on Oracle Cluster Ready Services (CRS), Oracle Grid Infrastructure (Oracle GI), and Oracle RAC systems.
What is transparent failover?
Overview. Transparent Application Failover (TAF) is a feature of the Java Database Connectivity (JDBC) Oracle Call Interface (OCI) driver. It enables the application to automatically reconnect to a database, if the database instance to which the connection is made fails. In this case, the active transactions roll back.
What is dBFS file system in Oracle?
Oracle Database File System (DBFS) creates a standard file system interface on top of files and directories that are stored in database tables. With DBFS, the server is the database. Files are stored as Oracle SecureFiles LOBs in a database table.
What is the difference between DBU and dBFS?
There is no standard conversion formula in converting dBU and dBFS. For example in US installation, +24dBU is 0dBFS in digital. This is different in other countries and applications. In Europe, +18dBU is 0dBFS. Other conventions are shown below for 0dBFS equivalent:
What is the difference between NFS and dBFS?
DBFS is similar to NFS in that it provides a shared network file system that looks like a local file system. Like NFS, there is a server component and a client component. In DBFS, the server is the Oracle Database.
What is dBFS content store in DBMS?
The implementation of the file system in the database is called the DBFS Content Store. The DBFS Content Store allows each database user to create one or more file systems that can be mounted by clients. Each file system has its own dedicated tables that hold the file system content.