Thread: Connection problems
Hi i've posted this message before but i'm adding new information to it. Hopefully some of the JDBC driver developers
can help me figure out what is going wrong.
previous message :
"
hi, i've just installed recently installed an rpm version of postgresql (postgresql-server-7.0.2-6mdk.i586.rpm) and it's client.
I've added just 1 user
with the
unix_shell>createuser -P apprentice
and a database with
unix_shell>createdb -U apprentice papers
i created a few tables and was able to check them out using this command
unix_shell>psql papers apprentice
now i need to write a small java program that can connect to the database and retreive some information
but the jdbc driver i have (jdbc7.0-1.2.jar) keeps throwing this exception when i try to connect with this URL
(jdbc:postgresql:papers)
Something unusual has occured to cause the driver to fail. Please report this exception: java.sql.SQLException: FA
TAL 1: Database "papers" does not exist in the system catalog.
TAL 1: Database "papers" does not exist in the system catalog.
hmm, i'm sure the database and the tables all exist.... can anybody tell me what i'm doing wrong?
"
All users and Databases, tables were created using lower case letters. I've tried connecting to other databases with other
user names but get the same exception. Both postmaster and my java program are running on the same machine. I'm using
JDK 1.3.0 from www.blackdown.org with Mandrake 7.2. I've also tried jdbc7.0-1.1.jar but i get the same exception ... why would
it report that the DB doesn't exist in the catalog when i can access it from psql???? Even the database "postgres" Doesn't exist
as far as the JDBC driver is concerned.
>From: "Panon, Paul-Andre" <Paul-AndrePanon@SierraSystems.com> >To: 'mall' <listkeeper23@hotmail.com> >Subject: RE: [INTERFACES] Connection problems >Date: Wed, 10 Jan 2001 14:01:01 -0800 > >If you installed the Mandrake rpm for postgres, I believe that by default >it >only accepts connections over UNIX pipes, not TCP/IP. You need the latter >to >support jdbc. > >To check whether the postmaster backend accept connections over TCP/IP, try >connecting to it with the command >psql -p 5432 papers apprentice > >If you get a connection error on the above command, you need to modify the >startup script for postgres. edit /etc/rc.d/init.d and add the -i flag to >the postmaster command. > >P-A > >-----Original Message----- >From: mall [mailto:listkeeper23@hotmail.com] >Sent: Wednesday, January 10, 2001 12:32 PM >To: pgsql-list >Subject: [INTERFACES] Connection problems > > > > >Hi i've posted this message before but i'm adding new information to it. >Hopefully some of the JDBC driver developers >can help me figure out what is going wrong. > > >previous message : > >" > >hi, i've just installed recently installed an rpm version of postgresql >(postgresql-server-7.0.2-6mdk.i586.rpm) and it's client. >I've added just 1 user > >with the > >unix_shell>createuser -P apprentice > >and a database with > > >unix_shell>createdb -U apprentice papers > >i created a few tables and was able to check them out using this command > >unix_shell>psql papers apprentice > >now i need to write a small java program that can connect to the database >and retreive some information >but the jdbc driver i have (jdbc7.0-1.2.jar) keeps throwing this exception >when i try to connect with this URL >(jdbc:postgresql:papers) > > >Something unusual has occured to cause the driver to fail. Please report >this exception: java.sql.SQLException: FA >TAL 1: Database "papers" does not exist in the system catalog. > >hmm, i'm sure the database and the tables all exist.... can anybody tell >me >what i'm doing wrong? >" > >All users and Databases, tables were created using lower case letters. >I've >tried connecting to other databases with other >user names but get the same exception. Both postmaster and my java program >are running on the same machine. I'm using >JDK 1.3.0 from www.blackdown.org <http://www.blackdown.org> with Mandrake >7.2. I've also tried jdbc7.0-1.1.jar but i get the same exception ... why >would >it report that the DB doesn't exist in the catalog when i can access it >from >psql???? Even the database "postgres" Doesn't exist >as far as the JDBC driver is concerned. > I did fix the /etc/rc.d/init.d/postgres script to include the -i parameter to start postgres. After that i was able to connect by using this commandline. unix_shell>psql -p 5432 papers apprentice but when i ran my program again it threw the same exception ... I'm abit confused at this point. if the jdbc driver was using port 5432 as the default port to connect to then why didn't it throw an exception about not finding a socket before i added the " -i" option. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com
Sorry everybody but i just figured out what my lame butt has done wrong. after reading the postgresql manual further i discovered the tracing features of the db server so i decided to add this entry to pg_options all=1 verbose=2 query=0 syslog=2 and i found this ... Jan 10 13:02:06 darktower postgres[3891]: InitPostgres Jan 10 13:02:06 darktower postgres[3891]: FATAL 1: Database "papers " does not exist in the system catalog. Jan 10 13:02:06 darktower postgres[3891]: proc_exit(0) Jan 10 13:02:06 darktower postgres[3891]: shmem_exit(0) Jan 10 13:02:06 darktower postgres[3891]: exit(0) "papers " DUH! somewhere in the program a blank space had gotten in. i fixed it and it works perfectly. Thanks to everybody that replied to my request for help. >From: "fud fudmore" <listkeeper23@hotmail.com> >To: Paul-AndrePanon@SierraSystems.com >CC: pgsql-interfaces@postgresql.org >Subject: RE: Connection problems >Date: Thu, 11 Jan 2001 00:11:40 -0000 > > > > >>From: "Panon, Paul-Andre" <Paul-AndrePanon@SierraSystems.com> >>To: 'mall' <listkeeper23@hotmail.com> >>Subject: RE: [INTERFACES] Connection problems >>Date: Wed, 10 Jan 2001 14:01:01 -0800 >> >>If you installed the Mandrake rpm for postgres, I believe that by default >>it >>only accepts connections over UNIX pipes, not TCP/IP. You need the latter >>to >>support jdbc. >> >>To check whether the postmaster backend accept connections over TCP/IP, >>try >>connecting to it with the command >>psql -p 5432 papers apprentice >> >>If you get a connection error on the above command, you need to modify the >>startup script for postgres. edit /etc/rc.d/init.d and add the -i flag to >>the postmaster command. >> >>P-A >> >>-----Original Message----- >>From: mall [mailto:listkeeper23@hotmail.com] >>Sent: Wednesday, January 10, 2001 12:32 PM >>To: pgsql-list >>Subject: [INTERFACES] Connection problems >> >> >> >> >>Hi i've posted this message before but i'm adding new information to it. >>Hopefully some of the JDBC driver developers >>can help me figure out what is going wrong. >> >> >>previous message : >> >>" >> >>hi, i've just installed recently installed an rpm version of postgresql >>(postgresql-server-7.0.2-6mdk.i586.rpm) and it's client. >>I've added just 1 user >> >>with the >> >>unix_shell>createuser -P apprentice >> >>and a database with >> >> >>unix_shell>createdb -U apprentice papers >> >>i created a few tables and was able to check them out using this command >> >>unix_shell>psql papers apprentice >> >>now i need to write a small java program that can connect to the database >>and retreive some information >>but the jdbc driver i have (jdbc7.0-1.2.jar) keeps throwing this exception >>when i try to connect with this URL >>(jdbc:postgresql:papers) >> >> >>Something unusual has occured to cause the driver to fail. Please report >>this exception: java.sql.SQLException: FA >>TAL 1: Database "papers" does not exist in the system catalog. >> >>hmm, i'm sure the database and the tables all exist.... can anybody tell >>me >>what i'm doing wrong? >>" >> >>All users and Databases, tables were created using lower case letters. >>I've >>tried connecting to other databases with other >>user names but get the same exception. Both postmaster and my java program >>are running on the same machine. I'm using >>JDK 1.3.0 from www.blackdown.org <http://www.blackdown.org> with Mandrake >>7.2. I've also tried jdbc7.0-1.1.jar but i get the same exception ... why >>would >>it report that the DB doesn't exist in the catalog when i can access it >>from >>psql???? Even the database "postgres" Doesn't exist >>as far as the JDBC driver is concerned. >> > > I did fix the /etc/rc.d/init.d/postgres script to include the -i >parameter to start postgres. After that i was able to connect by >using this commandline. > >unix_shell>psql -p 5432 papers apprentice > >but when i ran my program again it threw the same exception ... I'm abit >confused at this point. if the jdbc driver was using port 5432 as the >default port to connect to then why didn't it throw an exception about not >finding a socket before i added the " -i" option. > >_________________________________________________________________ >Get your FREE download of MSN Explorer at http://explorer.msn.com > _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com