2013/5/9 Arun P.L <arunpl@xxxxxxxxxxx>: > Hi, > > How can I upgrade to latest postgresql version 9.2 from my current version > 7.4.3? How complicated this will be as the db contains large amount of data? > I have installed the latest version 9.2 in new server and while restoring > the dump from old version, data in some of the large tables are not copied > and getting error. > > pg_restore: [archiver (db)] Error from TOC entry 1550 TABLE DATA > table_name; > pg_restore: [archiver (db)] COPY failed for table "table_name": ERROR: > invalid byte sequence for encoding "UTF8": 0xa0 > > What else can I do for this issue, or in general how can I upgrade from a > lower major version to higher version? Should I first upgrade to version 8 > first and then go for the 9? > > Please provide your suggestion regarding this. The latest supported 8.x version is 8.4, which is quite a long way ahead of 7.4 in a whole number of ways. The gap between 8.4 and 9.2 is not quite so great, IMHO, so you might as well shoot for that. Providing you can solve the encoding problem, the largest potential issue you might face is the tightening of typecasting between 8.2 and 8.3: http://www.postgresql.org/docs/current/interactive/release-8-3.html#AEN124084 This is more something which will affect any applications which access your database and which rely on implicit casting. There are also some changes to PL/PgSQL which you will need to take into account if your database uses them. I suggest taking some time to go through the release notes. I have previously upgraded a 7.4 installation to 9.0 without too many problems; I did have to spend some time wading through the associated application code to isolate any potential casting issues. Regards Ian Barwick -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
