Thread: RE: Data migration from postgres 8.4 to 9.4

RE: Data migration from postgres 8.4 to 9.4

From
Akshay Ballarpure
Date:
Thank you for detailed info. much appreciated. May i know how to install pg_upgrade ?


With Best Regards
Akshay




From:        "Albin, Lloyd P" <lalbin@scharp.org>
To:        Akshay Ballarpure <akshay.ballarpure@tcs.com>
Date:        04/16/2018 08:38 PM
Subject:        RE: Data migration from postgres 8.4 to 9.4




Akshay ,

There are several Official ways to upgrade PostgreSQL.

1) Use pg_upgrade (Faster) Postgres 8.4 to Postgres 9.4. Use the Postgres 9.4 version of pg_upgrade.

https://www.postgresql.org/docs/9.4/static/pgupgrade.html

2) Dump and Restore your database into a new server (Slower) Postgres 8.4 to Postgres 9.4 Use pg_dump with pg_restore or pg_dumpall with psql from Postgres 9.4 against your Postgres 8.4 Server. You need to use this method if you wish to change your initdb settings, such as the default encoding, turn on checksums, etc.

https://www.postgresql.org/docs/9.4/static/app-pgdump.html
https://www.postgresql.org/docs/9.4/static/app-pgrestore.html
https://www.postgresql.org/docs/9.4/static/app-pg-dumpall.html

3) Swap out the binaries. This can only be done using the same Postgres version (8.4.x or 9.4.x or 10.x) This means that you can upgrade from 9.4.9 to 9.4.12 by just swapping out the binaries.

4) Unofficially you can use things like slony, etc to do a live migration without downtime.

Lloyd




From: Akshay Ballarpure [akshay.ballarpure@tcs.com]
Sent:
Monday, April 16, 2018 12:03 AM
Subject:
Data migration from postgres 8.4 to 9.4


Hello,
I need help in using postgresql 8.4 data in postgres 9.4 version. Do I need to run any tool to achieve the same?


Steps i followed is ran postgresql 8.4 and 9.4, copied data from 8.4 instance to 9.4 and try to start postgresql 9.4 but no luck, getting below error.


[root@ms-esmon esm-data]# su - postgres -c "/opt/rh/rh-postgresql94/root/usr/bin/postgres -D /var/ericsson/esm-data/postgresql-data/ 2>&1 &"

[root@ms-esmon esm-data]# LOG:  skipping missing configuration file "/var/ericsson/esm-data/postgresql-data/postgresql.auto.conf"

2018-04-16 06:52:01.546 GMT  
FATAL:  database files are incompatible with server
2018-04-16 06:52:01.546 GMT  
DETAIL:  The data directory was initialized by PostgreSQL version 8.4, which is not compatible with this version 9.4.9.


With Best Regards
Akshay
Ericsson OSS MON
Tata Consultancy Services
Mailto: akshay.ballarpure@tcs.com
Website:
http://www.tcs.com
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RE: Data migration from postgres 8.4 to 9.4

From
"Ahmed, Nawaz"
Date:

Hi,

 

pg_upgrade does not need installation, it comes with a PostgreSQL installation.

 

You will find it in  the bin directory of your 9.4 PostgreSQL installation.

 

 

Best Regards,

 

Nawaz Ahmed
Software Development Engineer

Fujitsu Australia Software Technology Pty Ltd

14 Rodborough Road, Frenchs Forest NSW 2086, Australia
T +61 2 9452 9027
Nawaz@fast.au.fujitsu.com
fastware.com.au


 

From: Akshay Ballarpure [mailto:akshay.ballarpure@tcs.com]
Sent: Tuesday, 17 April 2018 10:24 PM
To: Albin, Lloyd P <lalbin@scharp.org>; pgsql-performance@lists.postgresql.org; pgsql@lists.postgresql.org
Subject: RE: Data migration from postgres 8.4 to 9.4

 

Thank you for detailed info. much appreciated. May i know how to install pg_upgrade ?


With Best Regards
Akshay




From:        "Albin, Lloyd P" <lalbin@scharp.org>
To:        Akshay Ballarpure <akshay.ballarpure@tcs.com>
Date:        04/16/2018 08:38 PM
Subject:        RE: Data migration from postgres 8.4 to 9.4





Akshay ,

There are several Official ways to upgrade PostgreSQL.

1) Use pg_upgrade (Faster) Postgres 8.4 to Postgres 9.4. Use the Postgres 9.4 version of pg_upgrade.
https://www.postgresql.org/docs/9.4/static/pgupgrade.html

2) Dump and Restore your database into a new server (Slower) Postgres 8.4 to Postgres 9.4 Use pg_dump with pg_restore or pg_dumpall with psql from Postgres 9.4 against your Postgres 8.4 Server. You need to use this method if you wish to change your initdb settings, such as the default encoding, turn on checksums, etc.
https://www.postgresql.org/docs/9.4/static/app-pgdump.html
https://www.postgresql.org/docs/9.4/static/app-pgrestore.html
https://www.postgresql.org/docs/9.4/static/app-pg-dumpall.html

3) Swap out the binaries. This can only be done using the same Postgres version (8.4.x or 9.4.x or 10.x) This means that you can upgrade from 9.4.9 to 9.4.12 by just swapping out the binaries.

4) Unofficially you can use things like slony, etc to do a live migration without downtime.

Lloyd



From: Akshay Ballarpure [akshay.ballarpure@tcs.com]
Sent:
Monday, April 16, 2018 12:03 AM
Subject:
Data migration from postgres 8.4 to 9.4


Hello,
I need help in using postgresql 8.4 data in postgres 9.4 version. Do I need to run any tool to achieve the same?


Steps i followed is ran postgresql 8.4 and 9.4, copied data from 8.4 instance to 9.4 and try to start postgresql 9.4 but no luck, getting below error.


[root@ms-esmon esm-data]# su - postgres -c "/opt/rh/rh-postgresql94/root/usr/bin/postgres -D /var/ericsson/esm-data/postgresql-data/ 2>&1 &"

[root@ms-esmon esm-data]# LOG:  skipping missing configuration file "/var/ericsson/esm-data/postgresql-data/postgresql.auto.conf"

2018-04-16 06:52:01.546 GMT  FATAL:  database files are incompatible with server

2018-04-16 06:52:01.546 GMT  DETAIL:  The data directory was initialized by PostgreSQL version 8.4, which is not compatible with this version 9.4.9.



With Best Regards
Akshay
Ericsson OSS MON
Tata Consultancy Services
Mailto: akshay.ballarpure@tcs.com
Website:
http://www.tcs.com
____________________________________________
Experience certainty.        IT Services
                      Business Solutions
                      Consulting
____________________________________________

=====-----=====-----=====
Notice: The information contained in this e-mail
message and/or attachments to it may contain
confidential or privileged information. If you are
not the intended recipient, any dissemination, use,
review, distribution, printing or copying of the
information contained in this e-mail message
and/or attachments to it are strictly prohibited. If
you have received this communication in error,
please notify us by reply e-mail or telephone and
immediately and permanently delete the message
and any attachments. Thank you

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