PostgreSQL Database Major Upgrade

Hello Guys...
In this post we are going to see PostgreSQL database major upgrade.
The earlier version of PostgreSQL is 9.6.5 and we are going to upgrade it to 10.1
Prerequisite:
  • A server with any flavour of UNIX having PostgreSQL 9.6.5 installed.
  • Binaries of PostgreSQL 10.1
  • Access to special OS user using database is installed. Here we are using postgres user as special OS user. postgres used for below execution.
Configuration Details:
  • Old data directory: /pg_data/pg_data_9.6.5/
  • New data directory: /pg_data/pg_data_10.1/
  • Old installation directory: /pghome/postgres_9.6.5/
  • New Installation directory: /pghome/postgres_10.1/
Upgrade Procedure:
  • backup database cluster.
  • shutdown database cluster.
  • Rename installation directory. It is good practise to rename installation directory instead of delete, if we have any trouble we can revert the changes.
  • Install PostgreSQL 10.1 using source code. I am going to write post for Standard PostgreSQL Database Installation.
  • Create database cluster using newly installed PostgreSQL. Execute this command using special OS user (postgres)
  • Restore old configuration files
  • Start database server using below command. Execute command using special OS user (postgres).
  • Restore data from backup. Execute this command using special OS user (postgres)
#############################!!! Happy Learning !!!##################################
References:
https://www.postgresql.org/docs/current/static/upgrading.html

Comments

Post a Comment

Popular posts from this blog

Oracle RAC Database QUIESCE Mode

Image
Oracle RAC database quiesce mode is only privileged user can login to database and perform operation. It is restricted mode for DBA operations only. To put RAC database in quiesce mode, use ALTER SYSTEM QUIESCE RESTRICTED Above statement affect all instances in RAC. Database Resource Manager feature must be activated. After all non-DBA session become inactive then database considered as quiesced. The instance from which you put RAC database in quiesce mode, from same instance you have to unquiesce database, using ALTER SYSTEM UNQUIESCE If you have executed ALTER SYSTEM QUIESCE RESTRICTED statement, and oracle database has not finished processing it, then you cannot open database. WE cannot open database if it is already quiesced. ALTER SYSTEM QUIESCE RESTRICTED and ALTER SYSTEM UNQUIESCE statement affect all instances in RAC database. Cold backup cannot be taken when databas
Read more

OMS 13c Port Requirement

  Recently I was working on OEM13c configuration. I was facing problem with which ports need to be open and that unidirectional or bidirectional. So I thought to write blog post on this. While working on OMS configuration and setup, we will come across many ports.  All the list of ports which used in OMS configuration and monitoring setup can be found in portlist.ini file. [oracle@############ ~]$ cat /u01/app/oracle/oemec2/middleware/install/portlist.ini Enterprise Manager Upload Http Port=4889 Managed Server Http Port=7202 Node Manager Http SSL Port=7403 OHS Http Port=9788 Enterprise Manager Upload Http SSL Port=4903 OHS Http SSL Port=9851 BI Publisher Http SSL Port=9803 Oracle Management Agent Port=3872 Enterprise Manager Central Console Http Port=7788 Admin Server Http SSL Port=7102 Managed Server Http SSL Port=7301 BI Publisher Http Port=9701 Enterprise Manager Central Console Http SSL Port=7803 These ports may vary for different OEM versions. Above port list is
Read more

PostgreSQL pg_controldata utility

Image
Hello Guys, In this post we are going see a utility provided by PostgreSQL to find information about database cluster.  If we want know information about PostgreSQL cluster like database block size, catalog information,  checkpoint information, WAL segment size, etc. we will use pg_controdata utility. the location of pg_controldata utility will be same as your postgresql installation then bin directory. to execute this utility we have to provide data directory location as parameter. The sample output is attached here. #############################!!! Happy Learning !!!################################
Read more