Re: Recovery Data Cant Be!!!

You're likely looking for pgfsck:

http://svana.org/kleptog/pgsql/pgfsck.html

Strong medicine, please backup your $PGDATA directory before playing
there, as you might wind up breaking things.

What's the exact error message in your logs when the database won't start
up?

The problem you're seeing is common when running on IDE drives with write
cache enabled, or with fsync=false on IDE with write cache disabled or
SCSI. On a solid storage subsystem, postgresql is close to
indestrubtable, i.e. you can crank up 500 simo transactions, pull the
plug, and the database will come right back up. That's how we test our
servers to make sure that the WAL and such is working properly.

On Fri, 7 Nov 2003, Edwin Quijada wrote:

> Hi!!
> There is an app to recover data for postgres after inapropiate server
> shutdown or power electrical down?
> I have a great problem. My system go down inapropiate and now my server
> doesnt up.
> What 's up with my data?
> I lost my data?
> I dont believe that a robust database like postgres is so weak for power
> down and understand that can go down electrical power but fail 2 ups.
>
> If somebody has any idea to help me this is the log file
>
> The server must be started under an unprivileged user id to prevent
> a possible system security compromise. See the documentation for
> more information on how to properly start the server.
>
> LOG: database system was interrupted at 2003-11-07 10:54:32 CET
> LOG: checkpoint record is at 1/34600318
> LOG: redo record is at 1/34600318; undo record is at 0/0; shutdown FALSE
> LOG: next transaction id: 6326695; next oid: 5776573
> LOG: database system was not properly shut down; automatic recovery in
> progress
> LOG: redo starts at 1/34600358
> PANIC: Invalid page header in block 8805 of 17097
> LOG: startup process (pid 1327) was terminated by signal 6
> LOG: aborting startup due to startup process failure
> LOG: database system was interrupted being in recovery at 2003-11-07
> 23:33:19 CET
> This probably means that some data blocks are corrupted
> and you will have to use the last backup for recovery.
> LOG: checkpoint record is at 1/34600318
> LOG: redo record is at 1/34600318; undo record is at 0/0; shutdown FALSE
> LOG: next transaction id: 6326695; next oid: 5776573
> LOG: database system was not properly shut down; automatic recovery in
> progress
> LOG: redo starts at 1/34600358
> PANIC: Invalid page header in block 8805 of 17097
> LOG: startup process (pid 1354) was terminated by signal 6
> LOG: aborting startup due to startup process failure
> LOG: database system was interrupted being in recovery at 2003-11-07
> 23:35:34 CET
> This probably means that some data blocks are corrupted
> and you will have to use the last backup for recovery.
> LOG: checkpoint record is at 1/34600318
> LOG: redo record is at 1/34600318; undo record is at 0/0; shutdown FALSE
> LOG: next transaction id: 6326695; next oid: 5776573
> LOG: database system was not properly shut down; automatic recovery in
> progress
> LOG: redo starts at 1/34600358
> PANIC: Invalid page header in block 8805 of 17097
> LOG: startup process (pid 1090) was terminated by signal 6
> LOG: aborting startup due to startup process failure
> LOG: database system was interrupted being in recovery at 2003-11-07
> 23:40:47 CET
> This probably means that some data blocks are corrupted
> and you will have to use the last backup for recovery.
> LOG: checkpoint record is at 1/34600318
> LOG: redo record is at 1/34600318; undo record is at 0/0; shutdown FALSE
> LOG: next transaction id: 6326695; next oid: 5776573
> LOG: database system was not properly shut down; automatic recovery in
> progress
> LOG: redo starts at 1/34600358
> PANIC: Invalid page header in block 8805 of 17097
> LOG: startup process (pid 1196) was terminated by signal 6
> LOG: aborting startup due to startup process failure
> LOG: database system was interrupted being in recovery at 2003-11-07
> 23:46:13 CET
> This probably means that some data blocks are corrupted
> and you will have to use the last backup for recovery.
> LOG: checkpoint record is at 1/34600318
> LOG: redo record is at 1/34600318; undo record is at 0/0; shutdown FALSE
> LOG: next transaction id: 6326695; next oid: 5776573
> LOG: database system was not properly shut down; automatic recovery in
> progress
> LOG: redo starts at 1/34600358
> PANIC: Invalid page header in block 8805 of 17097
> LOG: startup process (pid 1531) was terminated by signal 6
> LOG: aborting startup due to startup process failure
>
>
>
>
> *-------------------------------------------------------*
> *-Edwin Quijada
> *-Developer DataBase
> *-JQ Microsistemas
> *-809-747-2787
> * " Si deseas lograr cosas excepcionales debes de hacer cosas fuera de lo
> comun"
> *-------------------------------------------------------*
>
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