Обсуждение: pg_dump/psql: Select a server and automate password
Greetings!
On my computer, I have a copy of a customer's database for which a full backup file would be about 300 megabytes long. There are several history tables that are not needed for day-to-day operation of our system. I came up with a DOS batch file that consists of a sequence of pg_dump commands. The first dumps the database's schema, and all the rest dump the required tables into individual files. A companion batch file issues psql repeatedly to recreate the database and the tables.
On my computer, the batch files work fine. I run them and they happily call pg_dump or psql as many times as they need to, and I don't need to do anything.
I just uploaded the batch files to our customer's machine, and a couple of questions occured to me. First, pg_dump asks me for a password every time it is invoked. That doesn't happen on my computer. What is likely to be set up differently on my computer so that I don't need a password?
Second, I see no way to select a server in pg_dump or psql. I am connected to a computer that was set up for my use specifically for testing. In PGAdmin on that machine, I have a server talking to localhost and a server talking to the machine that hosts the production database. I would like to run my batch file on the testing machine, but how do I tell pg_dump to use the server that talks to the production machine?
Thank you very much!
RobR
On Wednesday 08 April 2009 6:51:44 am Radcon Entec wrote: > Greetings! > > On my computer, I have a copy of a customer's database for which a full > backup file would be about 300 megabytes long. There are several history > tables that are not needed for day-to-day operation of our system. I came > up with a DOS batch file that consists of a sequence of pg_dump commands. > The first dumps the database's schema, and all the rest dump the required > tables into individual files. A companion batch file issues psql > repeatedly to recreate the database and the tables. > > On my computer, the batch files work fine. I run them and they happily > call pg_dump or psql as many times as they need to, and I don't need to do > anything. > > I just uploaded the batch files to our customer's machine, and a couple of > questions occured to me. First, pg_dump asks me for a password every time > it is invoked. That doesn't happen on my computer. What is likely to be > set up differently on my computer so that I don't need a password? See pgpass http://www.postgresql.org/docs/8.3/interactive/libpq-pgpass.html > > Second, I see no way to select a server in pg_dump or psql. I am connected > to a computer that was set up for my use specifically for testing. In > PGAdmin on that machine, I have a server talking to localhost and a server > talking to the machine that hosts the production database. I would like to > run my batch file on the testing machine, but how do I tell pg_dump to use > the server that talks to the production machine? Use the -p switch to point pg_dump at the appropriate server. http://www.postgresql.org/docs/8.3/interactive/app-pgdump.html > > Thank you very much! > > RobR -- Adrian Klaver aklaver@comcast.net