Drop Down MenusCSS Drop Down MenuPure CSS Dropdown Menu

How to Use Server Control Utility (SRVCTL)

-
To manage the RAC environment, first build a configuration profile and optionally save it. The configuration can be built by commands such as add and setenv. It is a good practice to build configuration profiles and export them to ASCII files.

SRVCTL syntax has the following components:
> srvctl verb noun options
Where:
srvctl - the SRVCTL command.
verb - an action word such as start, stop, or remove.
noun - an object upon which SRVCTL performs the action verb, such as a database or instance. Alternatively, abbreviations can be used, which in this case are db and inst respectively.
options - extends the use of preceding verb-noun combinations.
To see the online command syntax and options for each SRVCTL command, enter:
> srvctl verb noun -h

SRVCTL verbs.
VERB
DESCRIPTION
add
Add a database or instance.
config
Lists the configuration for the database or instance.
Getenv
Lists the environment variables in the SRVM configuration.
Modify
Modifies the instance configuration.
remove
Removes the database or instance.
Setenv
Sets the environment variable in the SRVM configuration.
Start
Starts the database or instance.
Status
Status of the database or instance.
Stop
Stops the database or instance.
Unsetenv
Sets the environment variable in the SRVM configuration to unspecified

srvctl nouns
NOUN
ABBREVIATION
DESCRIPTION
database
db
Operation refers to objects for the database.
asm
asm
To add, configure, enable, start, obtain the status of, stop, disable, and remove ASM instances.
instance
Inst
Operation refers to objects for the instances.
nodeapps
no abbreviation
To add, configure, modify, manage environment variables for, start, obtain the status of, stop, and remove node applications.
Service
serv
To add, configure, modify, manage environment variables for, enable, start, obtain the status of, relocate, disable, stop, and remove services from your cluster database.

srvctl command options.
OPTION
MEANING
-d
Database name
-h
Print Usage
-i
Comma-separated list of instance names
-n
Node names or comma-separated node list

Some commonly used commands will be examined next.

srvctl add
This command adds configuration information for the database or for named instances.  add command:
OPTION
MEANING
-n
Node name that will support an instance.
-o
$ORACLE_HOME to locate lsnrctl (node option) and oracle binaries (other options)
-s
SPFILE name
-m
Database domain name, in the form ?us.domain.com?

For example, 
to add a new database:
> srvctl add database -d racdb -o /app/oracle/product/920
To add named instances to a database:
> srvctl add instance -d racdb -i rac1 -n mynode1
> srvctl add instance -d racdb -i rac2 -n mynode2
> srvctl add instance -d racdb -i rac3 -n mynode3

srvctl config
This command displays a list of configured databases. The syntax is:
srvctl config database -d database_name

For example, 
to display configured databases:
> srvctl  config database -d RACDB
Gives the output:
mynode1 RACDB1 /app/oracle/product/dbms/920
mynode2 RACDB2 /app/oracle/product/dbms/920

srvctl getenv
This command displays values for the environment from the SRVM configuration file. The syntax is:
If "start" is passed,  it should call  $ORACLE_HOME/bin/dbstart.
The dbstart script will read the contents of oratab and starts the database that is as Y.
          If "stop" is passed,  it
> srvctl getenv database -d database_name [-t name] 
> srvctl getenv instance -d database_name
  -i instance_name [-t name]

For example, 
to list all environment variables for a database:
> srvctl getenv database ?d racdb

srvctl setenv
This command sets values for the environment in the SRVM configuration file. 
The syntax is:
> srvctl setenv database -d database_name 
  -t name=value [,name=value,?]
srvctl setenv instance -d database_name 
   [-i instance_name] -t name=value [,name=value,?]
For example,
 to set list all environment variables for a database:
> srvctl setenv database -d mydb -t LANG=en

srvctl start
This command starts the database, all or named instances, and all listeners associated with the database. 
The syntax is:
> srvctl start database -d database_name 
  [-o start_options]  [-c connect_string]
> srvctl start instance -d database_name -i instance_name
  [,insta_name-list] [-o start_options] [-c connect_string]

srvctl start
OPTION
MEANING
-o
Options passed directly to startup command in SQL*Plus including PFILE.
-c
Connect string for connecting to the Oracle instance using SQL*Plus.
For example, 
to start the database and all enabled instances:
> srvctl start database -d mydb
To start specified instances:
> srvctl start instance -d racdb -i racdb1, racdb3

srvctl status
This command displays the status of the database and instance. 
The syntax is:
> srvctl status database -d database_name 
> srvctl status instance -d database_name 
-i instance_name [,instance_name-list]
For example,
 to get the current status of two instances:
> srvctl  status instance -d RAC -i racdb1, racdb2
  Instance RACDB1 is running on node mynode1
  Instance RACDB2 is not running on node mynode1

 srvctl stop
This command stops the database and all or named instances. 
The syntax is:
> srvctl stop database -d database_name 
  [-o stop_options] [-c connect_string] 
> srvctl stop instance -d database_name 
  -i instance_name [,instance_name_list] 
  [-o stop_options][-c connect_string]
For example,
 to stop the database all instances:
> srvctl stop database -d RACDB
To stop named instances:
> srvctl stop instance -d RACDB -i racdb1
srvconfig export/import 
Use the srvconfig command to export/import the SRVM configuration information. The following is an example of how to export the contents of the configuration information to the text file:
> srvconfig -exp file_name
To import the configuration information from the text file named to the configuration repository for the RAC, use the command:

> srvconfig -imp file_name

Related Article:

  1. How to Delete an Instance from an Oracle RAC Database
  2. How to Modifying SCAN Configuration in Oracle 11g Release 2 RAC
  3. How to install Oracle 12c Release 2 RAC 
  4. How to Configure DNS  for the SCAN used with Oracle RAC 
  5. How to Enable Archivelog Mode On RAC 10g/11g/12c
  6. How to Clean Up a Failed Grid Infrastruture Installation in Oracle12C R2 Rac
  7. How to Update VMware ESX Server 3.5
  8. How to Diagnose Oracle RAC Problems
  9. What are the Oracle RAC srvctl commands


Comments

Post a Comment

Popular posts from this blog

7 Steps to configure BDR replication in postgresql

-
Image
 The  BDR  (Bi-Directional Replication) project adds multi-master replication to PostgreSQL 9.4.  Postgres-BDR has a lower impact on the masters(s) than trigger-based replication solutions. There is no write-amplification, as it does not require triggers to write to queue tables in order to replicate writes.   Here We are using  postgres version 9.4.12 and bdr version 1.0.2. for configuring  multi master replication . Simply Following 7 steps you can configure the multi master replication in postgresql. To download the bdr in below link. .   https://github.com/2ndQuadrant/bdr/archive/bdr-pg/REL9_4_12-1.tar.gz $ tar -xzvf REL9_4_12-1.tar.gz $ wget https://github.com/2ndQuadrant/bdr/archive/bdr-plugin/1.0.2.tar.gz $ tar -xzvf 1.0.2.tar.gz 1. To install BDR. $ cd ~/bdr-bdr-pg-REL9_4_12-1 $ ./configure --prefix=/usr/lib/postgresql/9.4 --enable-debug --with-openssl $ make -j4 -s install-world $ cd ~/bdr-bdr-plugin-1.0.2 $ PATH=/usr/lib/postgresql/9.4/bin:"$PATH" ./c
Read more

How to find the server is whether standby (slave) or primary(master) in Postgresql replication ?

-
Method 1 You can check the mode of the server using "pg_controldata". [pgsql@test~]$ pg_controldata /usr/local/pgsql/data84/ Database cluster state: in archive recovery --> This is Standby Database Database cluster state: in production --> This is Production Database [Master] Method 2 You can use pg_is_in_recovery() which returns True if recovery is still in progress(so the server is running in standby mode or slave) postgres=# select pg_is_in_recovery(); pg_is_in_recovery ------------------- t (1 row) If Return    false   so the server is running in primary mode or master postgres=# select pg_is_in_recovery(); pg_is_in_recovery ------------------- f (1 row)
Read more

How to Get Table Size, Database Size, Indexes Size, schema Size, Tablespace Size, column Size in PostgreSQL Database

-
In this post, I am sharing few important function for finding the size of database, table and index in PostgreSQL. Finding object size in postgresql database is very important and common. Is it very useful to know the exact size occupied by the object at the tablespace. The object size in the following scripts is in GB. The scripts have been formatted to work very easily with PUTTY SQL Editor. 1. Checking table size excluding table dependency: SELECT pg_size_pretty(pg_relation_size('mhrordhu_shk.mut_kharedi_audit')); pg_size_pretty ---------------- 238 MB (1 row) 2. Checking table size including table dependency: SELECT pg_size_pretty(pg_total_relation_size('mhrordhu_shk.mut_kharedi_audit')); pg_size_pretty ---------------- 268 MB (1 row) 3. Finding individual postgresql database size SELECT pg_size_pretty(pg_database_size('db_name')); 4. Finding individual table size for postgresql database -including dependency index: SELECT pg_size_pretty(pg_total_rel
Read more

ERROR: operator does not exist: text ->> unknown LINE 1: ...stomer' as customer_name,sales_info ->>'PRODUCTS' ->>'produc... ^ HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.

-
postgres=# select * from sales; id | sales_info ----+---------------------------------------------------------------------------------- 1 | { "customer": "NIJAM", "PRODUCTS": {"product_name": "choclate","total_item": 6}} 2 | { "customer": "ABU", "PRODUCTS": {"product_name": "badam","total_item": 5}} 3 | { "customer": "UMAR", "PRODUCTS": {"product_name": "mobile","total_item": 1}} (3 rows) postgres=# SELECT sales_info ->>'customer' as customer_name,sales_info ->>'PRODUCTS' ->>'product_name' as name_of_product from sales where sales_info ->>'customer'='UMAR'; ERROR: operator does not exist: text ->> unknown LINE 1: ...stomer' as customer_name,sales_info -&
Read more

PostgreSQL 11 Source code Installation

-
I n this tutorial, we will show you how to   install PostgreSQL  by using source code   on your local system for learning and practicing PostgreSQL. PostgreSQL was developed for UNIX-like platforms, however, it was designed to be portable. It means that PostgreSQL can also run on other platforms such as Mac OS X, Solaris, and Windows. Since version 8.0, PostgreSQL offers an installer for Windows systems that makes the installation process easier and faster. For development purpose, we will install PostgreSQL version 11.3  on Linux There are three steps to complete the PostgreSQL installation: Download the PostgreSQL source file . Configure the PostgreSQL  source code . Verify the postgres configuration . 1. First install required prerequisites such as gcc, readline-devel and zlib-devel using package manager as shown. # yum install gcc zlib-devel readline-devel [On RHEL/CentOS] # apt install gcc zlib1g-dev libreadline6-dev [On Debian/Ubuntu] # Zypper in gcc zlib1g-dev l
Read more