Обсуждение: Question about connection java and Postgresql in Linux

I am trying to use Redhat Linux 9, J2sdk 1.4.2 and Postgresql 7.3.2 to
do my setting. But, I cannot access the database to set/get data
through the java program. Please help give me some suggestions.
Here is what my setting and problems:
http://hk.geocities.com/daisy_nhy/java_postgresql2.html

Thanks

On 20/09/2003 15:23 DN wrote:
> I am trying to use Redhat Linux 9, J2sdk 1.4.2 and Postgresql 7.3.2 to
> do my setting. But, I cannot access the database to set/get data
> through the java program. Please help give me some suggestions.
> Here is what my setting and problems:
> http://hk.geocities.com/daisy_nhy/java_postgresql2.html
>
> Thanks


The postgreSQL .jar file must go in common/lib _not_ share/lib. Two other
things:

1) have you enabled tcpip on the postmaster by seting

tcpip_socket = true

in /var/lib/pgsql/data/postgresql.conf

2) have you edited /var/lib/pgsql/data/pg_hba.conf to un-comment the line

# host  all   all  127.0.0.1   255.255.255.255  trust

because if you haven't done both of these, you won't be able to connect
from Java.

And before anybody jumps in, I'll just point out that the "host" line is
far too permissive to be used in production but if you're just starting
out experimenting with PostgreSQL and Java, it's one less thing to have to
worry about for now.

HTH

--
Paul Thomas
+------------------------------+---------------------------------------------+
| Thomas Micro Systems Limited | Software Solutions for the Smaller
Business |
| Computer Consultants         |
http://www.thomas-micro-systems-ltd.co.uk   |
+------------------------------+---------------------------------------------+

Thank you for answering my question

I have moved postgresql.jar to common/lib.

Also, my setting are:
tcpip_socket = true
in /var/lib/pgsql/data/postgresql.conf

host  all   all  127.0.0.1   255.255.255.255  crypt
in /var/lib/pgsql/data/pg_hba.conf

but, it also cannot work well.


By the way, do I need to set
 ./configure with-java

if yes, how can I set it?

On 21/09/2003 09:30 DN wrote:
> Thank you for answering my question
>
> I have moved postgresql.jar to common/lib.
>
> Also, my setting are:
> tcpip_socket = true
> in /var/lib/pgsql/data/postgresql.conf
>
> host  all   all  127.0.0.1   255.255.255.255  crypt
> in /var/lib/pgsql/data/pg_hba.conf
>
> but, it also cannot work well.
>
>
> By the way, do I need to set
>  ./configure with-java
>
> if yes, how can I set it?

./configure is used to build PostgreSQL from source. It doesn't affect any
of the run-time settings.

HTH

--
Paul Thomas
+------------------------------+---------------------------------------------+
| Thomas Micro Systems Limited | Software Solutions for the Smaller
Business |
| Computer Consultants         |
http://www.thomas-micro-systems-ltd.co.uk   |
+------------------------------+---------------------------------------------+