Hi,
"d0_aopen Error during fork"
can be caused by a resource limit (semaphore, cache, processes). This will hit you 
during backup since the backup thread (or clone process on Linux) is started on demand 
while all other threads for I/O or SQL processing have been startet with kernel start. 
It was designed that way due to the relativ short lifetime of such a backup thread. 
The misleading error message 'Interrupted system call' is a known bug, which has been 
fixed at least in 7.3.0.40.
CU
jrg

> -----Original Message-----
> From: Jerome Seubert [mailto:[EMAIL PROTECTED]
> Sent: Donnerstag, 20. November 2003 13:38
> To: [EMAIL PROTECTED]
> Subject: -903,Host file I/O error
> 
> 
> Hello,
> 
> I am using SAP DB 7.3 Build 28 under SuSE Linux Enterprise 
> Server 8 and 
> having a problem with the backup. After installing and loading the 
> database, I first defined the backup media and afterwards performed a 
> complete backup in mode cold. Then afterwards I activated 
> automated log 
> backups. Both worked fine so far. 
> 
> Now, I wanted to perform another complete backup, this time 
> in mode warm, 
> using the same command as before:
> 
> dbmcli -d I04 -u control,control -uUTL -c backup_start completeF
> 
> but this time it failed with the following error:
> 
> ERR
> -24988,ERR_SQL: sql error
> -903,Host file I/O error
> 
> Additional information from the knldiag.err is
> 
> 2003-11-20 11:04:25  3766 ERR 11000 d0_aopen Error during fork, 
> Interrupted system call
> 2003-11-20 11:04:26  3770 ERR 52012 SAVE     error occured, 
> basis_err 3700
> 
> After that, I tried to perform the backup in mode cold but got the 
> following error:
> 
> ERR
> -24988,ERR_SQL: sql error
> -903,Message not available
> 
> knldiag.err:
> 
> 2003-11-20 11:20:36  5181 ERR 11000 d0_aopen Error during fork, 
> Interrupted system call
> 2003-11-20 11:20:36  5185 ERR 52012 SAVE     error occured, 
> basis_err 3700
> 2003-11-20 11:20:37  5185 ERR 53017 I/O      SYSDEV DEVNO: 1
> 2003-11-20 11:20:37  5185 ERR 53016 I/O      /sapdb/I04/dbsys/SYS
> 
> 
> What is the cause of the problem? Is there a way to fix this?
> 
> Regards
> 
> J. Seubert
> 

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