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Don Burleson Blog 







OSD-04220: unable to open file Tips

Expert Oracle Database Tips by Donald BurlesonApril 8, 2015


Question:  I am trying to clone my database and I get the OSD-04002 error:

ORA-00344: unable to re-create  . . .
ORA-27040: skgfrcre: create error, unable to create file
OSD-04002: unable to open file
O/S-Error: (OS 5) Access is denied.

How do I resolve the ORA-00344 error?

Answer:   You start by using the oerr utility to look up OSD-04220 error:

OSD-04002 Unable to open file

Cause:- The specified path or filename is invalid, or the destination device is full.

Action:- Make sure the path and file exist, and the device has free space. If this fails, increase the number of OS file handles.

Also, see the related ORA-00344 unable to re-create  error.   You need to check these disk storage related  issues:  

  • Missing mount-point or Windows drive letter:  In another condition, a non-existent mount point (or non-existent disk) can cause these errors:

ORA-00344: unable to re-create online log 'D:\ORADATA\PROD\REDO01B.ORA'
ORA-27040: skgfrcre: create error, unable to create file
OSD-04002: unable to open file
O/S-Error: (OS 5) Access is denied.

In the above case, the PC does not have a D: drive mapped to Windows.

  • Incorrect OS Permissions - The directory owner should be your "oracle" user, and the permission should be at least 770, to allow the Oracle user and ensure that the is in the dba UNIX group.  A permission of 770 on the directory should allow you to allocate files within the mount point.  In Windows, abandon all hope and migrate to Linux.  You can issue the chmod 770 on the directory node to correct the permissions:

    oracle> cd 'u01/oradata/prod
    oracle>  chmod 770 logs

  • Not enough Disk Space - You need to check the filesystem space and ensure that there is enough room within the directory using the ?df ?k? command.  In  Windows, go to "Computer -->  Disks  --> (right click on disk letter)

For more information on using OS commands, see the book Oracle Shell Scripting

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