how to check how many processes running in oracle

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Tags: des style http OS io strong for artApplies To:Oracle database-enterprise edition-version 10.2.0.2 to 12.1.0.1 [Release 10.2 to 12.1] Linux x86 HP-UX Pa-risc (64-bit ) IBM AIX on POWER Systems (64-bit) Oracle Solaris on SPARC (64-bit) HP-UX Itanium Linux x86-64 Oracle Server Enterprise E dition-version:10.1 to 11.2PurposeProcwatcher is a tool to examine and monitor

We all know that there are two processes in the Oracle database that are very small, but their practical functions are very powerful. However, it is often ignored by the related administrators of Oracle databases because of its small size. This time I will remind you not to ignore the role of these two processes. If it

Introduction to Oracle RAC clusters, processes, and logs In a single-host environment, Oracle runs on the OS Kernel. OS Kernel manages hardware devices and provides hardware access interfaces. Oracle does not directly operate the hardware, but has an OS Kernel instead to complete the hardware call request. In a cluster

modified, it is marked as "dirty". The main task of DBWR is to write the "dirty" buffer to the disk to keep the buffer clean ". The number of unused buffers is reduced because the buffer zone is filled in the database or the user process is dirty. When unused buffers are dropped to a very small level, and user processes cannot find unused buffers when they want to read blocks from the disk to the memory storage area, DBWR manages the buffer areas, al

fails (eg. release database locks).These background processes, from the database can also be found, you can use the SQL below to check the background process, in the program column, you can see SMON,MMON,CKPT,PMON,MMAN,MMNL ... Background process Select * from v$session WHERE type =' BACKGROUND '; For background processes, refer to

when you star t a database instance. The Pmon process would free up resources if a user process fails (eg. release database locks). These background processes, from the database can also be found, you can use the SQL below to check the background process, in the program column, you can see SMON,MMON,CKPT,PMON,MMAN,MMNL ... Background process Select * from v$session WHERE type =' BACKGROUND ';

instance.It is very easy to create a single command to terminate the Oracle process related to the hung database instance. In the following example, we use the ps command to identify the Oracle process, and then use the awk program to obtain the process ID (PID) of the Oracle process ). Then, we enter the process ID in the kill command of UNIX.Root> ps-ef | grep

reasons during database operation. At this time, the dirty cache blocks in the data cache have not been written into the data file, resulting in data loss. When the database is started, the system monitoring process SMON will automatically read the redo log file and restore the database during the next startup routine. That is to say, to write committed transactions to a data file (data that has been written to a log file but not written to a data file) and to roll back uncommitted transactions

writes all the buffer zones to the disk. When a Check Point occurs, LGWR specifies that a buffer table must be written to the disk. DBWR writes the specified buffer to the disk. On Some platforms, one instance can have multiple DBWR instances. In such instances, some blocks can be written to one disk, while others can be written to other disks. The number of DBWR processes is controlled by the parameter DB

As we all know, in a RAC environment, the kill Ocssd.bin process can cause the host to reboot. But sometimes the system has been abnormal, and CRS can not shut down normally, and the host may be a few years without restarting the old system, no one dares to restart, now what? We can only attempt to manually kill the process and then manually repair CRS (note that there are only 3 d.bin processes in the 10.2 RAC). Test environment: Operating syst

OracleOfSEssionsAndProcessesOfLink is Sessions = 1.1 * processes + 5----- Experiment part ---- Microsoft Windows [version 5.2.3790](C) Copyright 1985-2003 Microsoft Corp. C: \ Documents ents and Settings \ Administrator> sqlplus/nolog SQL * Plus: Release 10.2.0.1.0-Production on Friday May 18 22:41:18 2012 Copyright (c) 1982,200 5, Oracle. All rights reserved. SQL> set linesize 1000SQL> set timing onSQL> se

The relationship between Oracle sessions and processes is sessions = 1.1 * processes + 5 ----- experiment part ---- Microsoft Windows [version 5.2.3790](C) Copyright 1985-2003 Microsoft Corp. C: \ Documents ents and Settings \ Administrator> sqlplus/nolog SQL * Plus: Release 10.2.0.1.0-Production on Friday May 18 22:41:18 2012 Copyright (c) 1982,200 5,

Introduction to various background processes in oracle background processes are used to execute the actual maintenance tasks required to ensure database operation. For example, a background process maintains the buffer cache and writes blocks to data files as needed. another process is responsible for copying the online redo log file to an archive object when it

voting device:/dev/raw/raw5 Format of 3 voting devices complete. Startup will be queued to init within 90seconds. Adding daemons to inittab Expecting the CRS daemons to be up within600 seconds. Failure at final check of Oracle CRS stack. 10 II. This issue is described in the mos document: 2.1 document 1: Root. Sh failed at failure at final check oforacle CRS st

1. GSD global services daemonDescription of Oracle official documentation The global services daemon (GSD) runs on each node with one GSD process per node. the GSD coordinates with the Cluster Manager to receive requests from clients such as the dbca, em, And the srvctl utility to execute administrative job tasks such as instance startup or shutdown. the GSD is not an oracle instance background process and

PMON, RECO, and ARCn PMON: processmonitor process Monitoring of oracle 10g processes performs data recovery when the user process is interrupted (abnormal. PMON is responsible for clearing the data buffer pool and releasing resources used by user processes, such as restoring uncommitted transactions, Releasing locks, and deleting dead

> ps-ef | grep ora _ | \Grep-v grep | awk '{print $2}' | xargs-I kill-9 {}After terminating all Oracle processes, we can use the ipcs-pmb command to check the occupied memory and clear the memory occupied by the database. We first show all memory usage on the database server:Root> ipcs-pmbIpstatus from/dev/kmem as of Mon Sep 10 16:45:16 2001T ID KEY MODE OWNER GR

There are two very small processes in the Oracle database, but their role is very huge. Because it is relatively small, it is often ignored by the database administrator. I will give it this time There are two very small processes in the Oracle database, but their role is very huge. Because it is relatively small, it i

formal migration. 1. Migration Evaluation A comprehensive evaluation is a key element of migration success. The overall goal of the evaluation is to discover problems that may affect the migration process so that sufficient resources can be allocated to ensure the migration is successful. First, evaluate the application environment and application to identify potential obstacles; second, to what extent your Oracle database will adapt to DB2's hard da