Description of problem:
When trying to create a yum repository with more than 64 chars in Label, the WebUi gives the missleading:
---
Repository created successfully

Internal Server Error

The server experienced a problem which prevented your request from being filled out. It may not be possible to execute this action at this time.

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---

In /var/log/tomcat6/catalina.out the real reason is visible:

Caused by: java.sql.SQLException: ORA-12899: value too large for column "SPACEWALK"."RHNCONTENTSOURCE"."LABEL" (actual: 70, maximum: 64)

Version-Release number of selected component (if applicable):
detected in: spacewalk-oracle.noarch 1.9.2-1.el6, probably applicable to all versions

How reproducible:
always

Steps to Reproduce:
1. Create repo with Label >64 characters
2. see /var/log/tomcat6/catalina.out
3.

Actual results:
Repository is not beeing added despite the WebUI tells "created successfully" plus giving no useful error message.

Expected results:
WebUI should prevent entering more than 64 characters OR error message should state that Label is too long