TracError: Unsupported version control system

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Problem

Full error message:

TracError: Unsupported version control system "svn". Check that the Python bindings for "svn" are correctly installed.

Trac version: 0.10.5-1.fc10 Apache httpd version: 2.2.11-2.fc10 Subversion version: 1.5.4-3

SVNSubversion core import test according inctruction at [1]

[user@server /]# python 
Python 2.5.2 (r252:60911, Sep 30 2008, 15:42:03) 
[GCC 4.3.2 20080917 (Red Hat 4.3.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from svn import core
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.5/site-packages/svn/core.py", line 19, in <module>
    from libsvn.core import *
  File "/usr/lib64/python2.5/site-packages/libsvn/core.py", line 7, in <module>
    import _core
ImportError: /usr/lib64/libsvn_fs_base-1.so.0: undefined symbol: db_create

Library libsvn_fs_base dependencies:

[user@server /usr/lib64]# ldd /usr/lib64/libsvn_fs_base-1.so.0
	linux-vdso.so.1 =>  (0x00007fffb3ffe000)
	libsvn_delta-1.so.0 => /usr/lib64/libsvn_delta-1.so.0 (0x00007fd4abaa1000)
	libsvn_subr-1.so.0 => /usr/lib64/libsvn_subr-1.so.0 (0x00007fd4ab861000)
	libaprutil-1.so.0 => /usr/lib64/libaprutil-1.so.0 (0x00007fd4ab63f000)
	libapr-1.so.0 => /usr/lib64/libapr-1.so.0 (0x00007fd4ab415000)
	libsvn_fs_util-1.so.0 => /usr/lib64/libsvn_fs_util-1.so.0 (0x00007fd4ab214000)
	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fd4aaff0000)
	libc.so.6 => /lib64/libc.so.6 (0x00007fd4aac7e000)
	libz.so.1 => /lib64/libz.so.1 (0x00007fd4aaa69000)
	libuuid.so.1 => /lib64/libuuid.so.1 (0x00007fd4aa864000)
	libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fd4aa62c000)
	libexpat.so.1 => /lib64/libexpat.so.1 (0x00007fd4aa08e000)
	libdl.so.2 => /lib64/libdl.so.2 (0x00007fd4a9e8a000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fd4abedb000)

Missing dependency:

	libdb-4.7.so => /usr/lib64/libdb-4.7.so (0x00007fd4aa2b8000)


Solution

Problem is connected with version of apr(Apache Portable Runtime library)

[user@server lib64]# ll|grep libapr
lrwxrwxrwx  1 root root      21 29. čen 11.36 libaprutil-1.so.0 -> libaprutil-1.so.0.3.7
-rwxr-xr-x  1 root root  140768 23. srp  2008 libaprutil-1.so.0.3.4
-rwxr-xr-x  1 root root  138944  8. čen 08.58 libaprutil-1.so.0.3.7
lrwxrwxrwx  1 root root      17 29. čen 11.36 libapr-1.so.0 -> libapr-1.so.0.3.5
-rwxr-xr-x  1 root root  173664 23. srp  2008 libapr-1.so.0.3.3
-rwxr-xr-x  1 root root  175136  8. čen 08.47 libapr-1.so.0.3.5

Change symbolic link to older working version of libapr and libaprutil.

[user@server lib64]# ll|grep libapr
lrwxrwxrwx  1 root root      21 30. čen 10.35 libaprutil-1.so.0 -> libaprutil-1.so.0.3.4
-rwxr-xr-x  1 root root  140768 23. srp  2008 libaprutil-1.so.0.3.4
-rwxr-xr-x  1 root root  138944  8. čen 08.58 libaprutil-1.so.0.3.7
lrwxrwxrwx  1 root root      17 30. čen 10.34 libapr-1.so.0 -> libapr-1.so.0.3.3
-rwxr-xr-x  1 root root  173664 23. srp  2008 libapr-1.so.0.3.3
-rwxr-xr-x  1 root root  175136  8. čen 08.47 libapr-1.so.0.3.5