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RE: Error message restarting a database

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-----Original Message-----
From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx] 
Sent: Sunday, January 27, 2019 16:52
To: Begin Daniel
Cc: pgsql-general
Subject: Re: Error message restarting a database

On 1/27/19 1:38 PM, Begin Daniel wrote:
> -----Original Message-----
> From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx]
> Sent: Sunday, January 27, 2019 16:15
> To: Begin Daniel
> Cc: pgsql-general
> Subject: Re: Error message restarting a database
> 
> On 1/27/19 12:56 PM, Begin Daniel wrote:
> 
> Not a good day, forgot to actually Cc list last time.
> 
>> -----Original Message-----
>> From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx]
>> Sent: Sunday, January 27, 2019 15:43
>> To: Begin Daniel
>> Subject: Re: Error message restarting a database
>>
>> On 1/27/19 12:38 PM, Begin Daniel wrote:
>> Please reply to list also
>> Ccing list.
>>> -----Original Message-----
>>> From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx]
>>> Sent: Sunday, January 27, 2019 15:33
>>> To: Begin Daniel; pgsql-general@xxxxxxxxxxxxxxxxxxxx
>>> Subject: Re: Error message restarting a database
>>>
>>> On 1/27/19 12:23 PM, Begin Daniel wrote:
>>>> I worked with a PostgreSQL database (9.3) for a couple of years on my
>>>> PC. I shut down the PostgreSQL server about a year ago and I obviously
>>>> did not access the database since. Now I am trying to access again to
>>>> the database but I get the following error message...
>>>>
>>>> FATAL: *"pg_tblspc/113608/PG. 9.3_ 201306121/18364" is not a valid data
>>>> directory
>>>>
>>>> DETAIL: File *" pg_tblspc/113608/PG. 9.3_ 201306121/18364/PG_VERSION" is
>>>> missing.
>>>>
>>>> Anyone has an idea on how to solve this problem?
>>>
>>> What OS and version?
>>> Best guess is your OS updated Postgres in the past year and the newer
>>> version is trying to load an older data directory.
>>>
>>>>
>>>> Daniel
>>>>
>>>
>>> OS and version...
>>> Windows 10 Pro, Version 1809 installed on 2019-01-11
>>> OS Build 17763.253
>>
>> Whoops, just realized the errors are pointing at a tablespace/dir.
>>
>> Does the directory in the error message exist?
>>
>>>
>>>
>> I have multiple tablespaces. According to the definition of my tablespaces, the error point on the following directory:  K:\pgsqlData\PG_9.3_201306121\18364
>> The directory exists with 888 items in it, but there is no file named PG_VERSION
>>
> 
> Are all the tablespaces connected to a single Postgres instance?
> 
> Are you still using Postgres 9.3?
> 
> Does the  Postgres top level data directory still exist?
> 
> 
> Right, not a good day ;-)
> - All tablespaces are connected to a single Postgres database instance
> - I am still using Postgres 9.3 since I did not change anything related to PostgreSQL since I shut down the server a year ago
> - I am not sure what you mean by top level directory.

PGDATA from here:
https://www.postgresql.org/docs/10/storage-file-layout.html

I am going to say PGDATA exists given the below.


> 
> I am using PgAdmin to access my PostgreSQL databases. I can access the default database (postgres), tablespace definitions, group roles and login roles. The other database instance I have is the one that send me error messages.
> 

To be clear you are running only one instance(cluster) of Postgres and 
that instance has several databases defined in it, correct?

If you go to PGDATA.pg_tblspc  do you have links to the tablespaces?

I only installed one instance of Postgres on my PC, which I use to manage two databases (postgres and osmdump). osmdump is the database that complains.

Regarding the links to the tablespaces, I first ran the following request.
SELECT spcname FROM pg_tablespace; and got the following list.
"pg_default"
"pg_global"
"workspace"
"datadrive1"
"datadrive2"
"datadrive3"
"datadrive0"

I went to E:\pgsqlData\pg_tblspc and found the links to the five last tablespaces above (I manually created them, the first two were created when I installed Postgres). 
E:\pgsqlData\pg_tblspc \113608\PG_9.3_201306121\18364 link to the 888 items mentioned previously (physically stored in K:\pgsqlData\pg_tblspc...)
I also found a PG_VERSION file in E:\pgsqlData. The file contains the value 9.3

Daniel




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