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Hi Raghavendra, Is it sure that we can copy only the data of Postgresql from one disk to other seamlessly and then I can reuse the content without any hassle? If so, tablespace
is what I should create first? Please clarify me on this. Thanks & Regards, Siva. From: Raghavendra [mailto:raghavendra.rao@xxxxxxxxxxxxxxxx]
On Thu, May 3, 2012 at 6:52 PM, Siva Palanisamy <siva_p@xxxxxxx> wrote: Hi there! I'm interested to get the physical locations of tables, views, functions, data/content available in the tables of PostgreSQL in Linux OS. I've a scenario that PostgreSQL could be installed in SD-Card facility
and Hard-Disk. If I've tables, views, functions, data in SD, I want to get the physical locations of the same and merge/copy into my hard-disk whenever I wish to replace the storage space. I hope the storage of database should be in terms of plain files architecture. You first step should start from $PGDATA/base/, you find OID's as directories which are related to each database of your cluster. In OID's directory, you find all the objects ID's for Tables/indexes/view etc., To know the object id, you can use a system defined function. postgres=# select pg_relation_filepath('foo'); pg_relation_filepath ---------------------- base/12780/16407 (1 row) 12780, is database OID. For moving objects from one drive to other, you need to use tablespaces.
You cannot know the contents in files, unless u are good hacker :) --- Regards, Raghavendra EnterpriseDB Corporation ::DISCLAIMER:: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ----------------------------------------------------------------------------------------------------------------------- |
