what I was doing: Try to migrate the ssrs 2005 sp2 in a old web server to SSRS 2014 in a new server (native mode)
1. old SSRS web server: SSRS 2005 SP2 enterprise edition with window server 2003 (server 1)
2. New SSRS web server: window server 2012 R2, installed sql server 2014 database engine and SSRS. (server 2)
3. backup configuration files, encryption key, we have no custom assamblies from the old SSRS web Server (server 1)
4. Backup the report server databases from the existing old database server. (server 3) (our SSRS web server and SSRS report server databases are in different servers)
5. Created the RSExecRole and grantd all the permissions according to the documentation in the sql server 2014 database server (server 4)
6. Restore the databases to the new database server that is in sql server 2014. (server 4)
7. Go to server 2 to configure the reporting service using the configuration Manager
I successfully pointed to new databases, but when test the url, I got the error: The version of the report server database is either in a format that is not valid or it can not be read. The found version is '143' and the expected version is '162'
I worked with Microsoft technician, and he said I have to upgrade my old SSRS from 2005 SP2 to 2005 SP4 first then do the migration. But I saw some article saying that I can migrate the SSRS from 2005 SP2 to SSRS 2014. Any help is very much appreciated.
Li-hui Chen