SVN Commit Error (svn: database is locked)

[朱苗]

Hi Dear,
 
   I'm using SVN 1.6.15 as my svn server (installed in SUSE 10).
 
   I can checkout, update, commit, import to my svn repositories successfully.
 
   But today, I suffered the error when doing svn commit:
 
   =============================
   svn: Commit failed (details follow): 
   svn: database is locked 
  ==============================
 
   The case is that I run the "svn commit" task at the same time in several 
threads. And in each thread, the script runs 2 tasks:
 
   #!/usr/bin/bash
   svn ci -m "new file1" file1
   svn ci -m "new file2" file2
 
   After I changed the script to:
 
   #!/usr/bin/bash
   svn ci -m "new files" 
 
   The error above not happen again.    
   
   It was OK when I run in my old SVN server (svn version is 1.5.4). But it 
happen in 1.6.15 if I use the 1st script.
 
   Is it still a bug? Or is there any way I can resolve the problem? Is there 
any stable version that has the bug fixed?
 
   Thanks!
 
BR//Zoe