Hi Adrian, Thanks for your suggestions. I will try your modifications and do benchmarking.
Thanks, Samson G On Wed, Sep 4, 2024 at 8:34 PM Adrian Klaver <adrian.kla...@aklaver.com> wrote: > On 9/4/24 03:48, Sam Son wrote: > > Hi Adrian, Muhammad, > > > > Thanks for the quick response. > > > > For new I cannot do changes in old version DB, since it is deployed > > remotely and i dont have any access. And it has to be done from multiple > > servers. > > > > As a work around I tried two solutions. > > Both of which depend on the plpythonu functions running with plpython3u, > in other words that they are Python3 compatible. Have you verified that? > > > > > *Solution 1:* > > > > After downloading and extracting the dump, convert the pgdump file to > > sql file which is editable. > > > > * pg_restore -f out_dump.sql dump.pgdump* > > > > Replace all the plpythonu references with plputhon3u. > > > > Restore using the sql file. > > > > * sudo -H -u postgres psql -p 5433 -d db_name < out_dump.sql* > > I would suggest working on the schema portion separate from the data: > > pg_restore -s -f out_dump_schema.sql dump.pgdump* > > Do your search and replace, restore to database and then: > > pg_restore -a ... dump.pgdump* > > Where -a is data only. > > In fact if you have control of the pg_dump break it into two parts: > > pg_dump -s ... --schema > > pg_dump -a ... --data only > > > > > > > *Solution 2:* > > > > After downloading and extracting the dump, get the list of items in dump > > (Schemas, tables, table data, Index, functions, etc). > > > > * pg_restore -l dump.pgdump > dump.txt* > > > > Delete all the function references which have plpython3u. > > I'm guessing you meant plpythonu above. > > > > *Question:* > > > > Our database size is 500GB, > > > > Do we see any performance impact using solution 1. Since solution 1 is > > using sql file load and solution 2 is using pg_restore directly. > > > > Kindly recommend what to choose, solution 1 or solution 2 or any other > > workaround to restore. > > Personally I would go with solution 1 with the modifications I suggested. > > > > > > > Thanks, > > Samson G > > > > > -- > Adrian Klaver > adrian.kla...@aklaver.com > >
