What is MMON in Oracle?

MMON (Manageability Monitor) is a background process that gathers memory statistics (snapshots) and stores this information in the AWR (automatic workload repository). MMON is also responsible for issuing alerts for metrics that exceed their thresholds. This process was introduced in Oracle 10g.

MMAN dynamically adjust the sizes of the SGA components like buffer cache, large pool, shared pool and java pool and serves as SGA memory broker. It is a new process added to Oracle 10g as part of automatic shared memory management.

what is Ckpt process in Oracle? CKPT (Oracle Checkpoint Process) is an Oracle background process that timestamps all datafiles and control files to indicate that a checkpoint has occurred. The “DBWR checkpoints” statistic (v$sysstat) indicates the number of checkpoint requests completed.

Also, what is the use of Oracle?

Oracle is One of the DATABASE language its used for Create database,tables,records…etc… An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management.

What is Lgwr?

LGWR (LoG WRiter) is an Oracle background process created when you start a database instance. The LGWR writes the redo log buffers to the on-line redo log files. If the on-line redo log files are mirrored, all the members of the group will be written out simultaneously.

What is Smon and Pmon in Oracle?

PMON and SMON are two required background processes. PMON is the Process Monitor which is responsible for recovering processes when the user process fails. PMON does the process cleanup. SMON is the System Monitor which is responsible for recovering the system after a failure.

What is m000 background process in Oracle?

M000 background process generates a trace file at database startup, related to PGA sizing. The trace file contains information related to process memory, similar to the following: Note the allocation of 384MB for qesmmCheckPgaL in the above.

What is RECO in Oracle?

RECO (Oracle RECOverer Process) is an Oracle background process created when you start an instance with DISTRIBUTED_TRANSACTIONS= in the initialization parameter file. The RECO process will try to resolve in-doubt transactions across Oracle distributed databases.

What is user process and server process in Oracle?

Three types of processes are part of the instance: Background processes are involved in running the Oracle software itself. Server processes negotiate the actions of the users. User processes commonly work outside the database server itself to run the application that accesses the database.

What is RECO in Oracle database?

The recoverer process (RECO) is a background process used with the distributed database configuration that automatically resolves failures involving distributed transactions. The RECO process of a node automatically connects to other databases involved in an in-doubt distributed transaction.

How does Oracle background process work?

Each background process has a separate task but works with the other processes. When a filled log file is ready to be archived, LGWR signals another process to archive the file. Oracle Database creates background processes automatically when a database instance starts.

What is mandatory background process in Oracle 11g?

This section describes the following mandatory background processes: Process Monitor Process (PMON) System Monitor Process (SMON) Database Writer Process (DBWn) Log Writer Process (LGWR) Checkpoint Process (CKPT) Manageability Monitor Processes (MMON and MMNL) Recoverer Process (RECO)

What are the background processes in ASM?

ASMB – ASM Background Process. RBAL – ASM Rebalance Master Process. ARBn – ASM Rebalance Process. DBWR – Database Writer Process. SMON – System Monitor Process. CKPT – Checkpoint Process. PSP0 – Process Spawner Process. GMON – ASM Disk Group Monitor Process.

Is Oracle a programming language?

Oracle Database developers have a choice of languages for developing applications—C, C++, Java, COBOL, PL/SQL, and Visual Basic. The entire functionality of the database is available in all the languages. All language-specific standards are supported.

What is Oracle best known for?

The company is best known for its Oracle database software, a relational database management system, and for computer systems and software, such as Solaris and Java, acquired in its purchase of Sun Microsystems in 2010. Oracle is based in Redwood Shores, California.

Is Oracle an ERP?

Oracle’s E-Business Suite (also known as Applications/Apps, EB-Suite/EBS, eBus or “E-Biz”) consists of a collection of enterprise resource planning (ERP), customer relationship management (CRM), and supply-chain management (SCM) computer applications either developed or acquired by Oracle.

Is Oracle easy to learn?

It’s relatively easy to learn — as long as you have a good handle on Linux and SQL. If you have already learned SQL Server, then you can certainly learn Oracle databases. Oracle isn’t necessarily harder to learn than Microsoft SQL Server — it’s just different.

How do you manage data in Oracle?

From Database Control, you can monitor and administer a single Oracle Database instance or a clustered database. Grid Control is the Enterprise Manager console you use to centrally manage your entire Oracle environment. Within Grid Control, you access the multiple database targets using the Targets tab, then Databases.

Why is Oracle DB so popular?

Functionality: Oracle provides the combination of high-level security and integrated business solutions. As it fits perfectly with the needs of businesses and corporations, they are the most common users of Oracle database. Today, Oracle dominates the companies and banking industries.