svn sqllite database malformed
sqlite3 .svn/wc.db
sqlite> .mode insert
sqlite> .output dump_all.sql
sqlite> .dump
sqlite> .exit
mv .svn/wc.db .svn/wc-corrupt.db
sqlite3 .svn/wc.db
sqlite> .read dump_all.sql
sqlite> .exit
//compare user-version from new db with backup
sqlite3 .svn/wc.db 'PRAGMA user_version;'
sqlite3 .svn/wc-corrupt.db 'PRAGMA user_version;' //remember user-version
sqlite3 .svn/wc.db 'PRAGMA user_version = XXX;' //replace XXX with user-version from backup