From: Bruce Momjian Date: Tue, 23 Jan 2001 01:00:55 +0000 (+0000) Subject: Update FAQ. X-Git-Tag: REL7_1~721 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c0bb21b3693cc0eb99054b639837e0c97ef5502d;p=postgresql Update FAQ. --- diff --git a/doc/FAQ b/doc/FAQ index 6578a81103..0f754fe477 100644 --- a/doc/FAQ +++ b/doc/FAQ @@ -32,7 +32,7 @@ User Client Questions 2.1) Are there ODBC drivers for PostgreSQL? - 2.2) What tools are available for hooking PostgreSQL to Web pages? + 2.2) What tools are available for use PostgreSQL with Web pages? 2.3) Does PostgreSQL have a graphical user interface? A report generator? An embedded query language interface? 2.4) What languages are available to communicate with PostgreSQL? @@ -50,11 +50,10 @@ 3.5) How do I prevent other hosts from accessing my PostgreSQL database? 3.6) Why can't I connect to my database from another machine? - 3.7) All my servers crash under concurrent table access. Why? - 3.8) How do I tune the database engine for better performance? - 3.9) What debugging features are available? - 3.10) I get "Sorry, too many clients" when trying to connect. Why? - 3.11) What are the pg_sorttempNNN.NN files in my database directory? + 3.7) How do I tune the database engine for better performance? + 3.8) What debugging features are available? + 3.9) I get "Sorry, too many clients" when trying to connect. Why? + 3.10) What are the pg_sorttempNNN.NN files in my database directory? Operational Questions @@ -197,9 +196,6 @@ 1.6) Where can I get support? - There is no support for PostgreSQL from the University of California, - Berkeley. It is maintained through volunteer effort. - The main mailing list is: pgsql-general@PostgreSQL.org. It is available for discussion of matters pertaining to PostgreSQL. To subscribe, send mail with the following lines in the body (not the @@ -236,7 +232,7 @@ There is also an IRC channel on EFNet, channel #PostgreSQL. I use the unix command irc -c '#PostgreSQL' "$USER" irc.phoenix.net. - A list of commercial PostgreSQL support is available at + A list of commercial support companies is available at http://www.postgresql.org/users-lounge/commercial-support.html. 1.7) What is the latest release? @@ -385,7 +381,7 @@ See also the ODBC chapter of the Programmer's Guide. - 2.2) What tools are available for hooking PostgreSQL to Web pages? + 2.2) What tools are available for using PostgreSQL with Web pages? A nice introduction to Database-backed Web pages can be seen at: http://www.webtools.com @@ -469,6 +465,9 @@ authentication by modifying the file $PGDATA/pg_hba.conf accordingly. This will allow TCP/IP connections. + Inoperative semaphores can also cause crashes during heavy database + access. + 3.6) Why can't I connect to my database from another machine? The default configuration allows only unix domain socket connections @@ -476,12 +475,7 @@ postmaster has been started with the -i option, and add an appropriate host entry to the file pgsql/data/pg_hba.conf. - 3.7) All my servers crash under concurrent table access. Why? - - This problem can be caused by a kernel that is not configured to - support semaphores. - - 3.8) How do I tune the database engine for better performance? + 3.7) How do I tune the database engine for better performance? Certainly, indices can speed up queries. The EXPLAIN command allows you to see how PostgreSQL is interpreting your query, and which @@ -512,7 +506,7 @@ You can also use the CLUSTER command to group data in tables to match an index. See the CLUSTER manual page for more details. - 3.9) What debugging features are available? + 3.8) What debugging features are available? PostgreSQL has several features that report status information that can be valuable for debugging purposes. @@ -559,7 +553,7 @@ pgsql/data/base/dbname directory. The client profile file will be put in the client's current directory. - 3.10) I get 'Sorry, too many clients' when trying to connect. Why? + 3.9) I get 'Sorry, too many clients' when trying to connect. Why? You need to increase the postmaster's limit on how many concurrent backend processes it can start. @@ -587,7 +581,7 @@ was 64, and changing it required a rebuild after altering the MaxBackendId constant in include/storage/sinvaladt.h. - 3.11) What are the pg_sorttempNNN.NN files in my database directory? + 3.10) What are the pg_sorttempNNN.NN files in my database directory? They are temporary files generated by the query executor. For example, if a sort needs to be done to satisfy an ORDER BY, and the sort diff --git a/doc/src/FAQ/FAQ.html b/doc/src/FAQ/FAQ.html index 4cd94ab4c4..477ca24a3c 100644 --- a/doc/src/FAQ/FAQ.html +++ b/doc/src/FAQ/FAQ.html @@ -53,8 +53,8 @@ 2.1) Are there ODBC drivers for PostgreSQL?
- 2.2) What tools are available for hooking - PostgreSQL to Web pages?
+ 2.2) What tools are available for use PostgreSQL + with Web pages?
2.3) Does PostgreSQL have a graphical user interface? A report generator? An embedded query language interface?
@@ -77,14 +77,12 @@ accessing my PostgreSQL database?
3.6) Why can't I connect to my database from another machine?
- 3.7) All my servers crash under concurrent - table access. Why?
- 3.8) How do I tune the database engine for + 3.7) How do I tune the database engine for better performance?
- 3.9) What debugging features are available?
- 3.10) I get "Sorry, too many clients" + 3.8) What debugging features are available?
+ 3.9) I get "Sorry, too many clients" when trying to connect. Why?
- 3.11) What are the pg_sorttempNNN.NN + 3.10) What are the pg_sorttempNNN.NN files in my database directory?
@@ -260,10 +258,6 @@

1.6) Where can I get support?

-

There is no support for PostgreSQL from the University of - California, Berkeley. It is maintained through volunteer - effort.

-

The main mailing list is: pgsql-general@PostgreSQL.org. It is available for discussion of matters pertaining to PostgreSQL. @@ -316,7 +310,7 @@ #PostgreSQL. I use the unix command irc -c '#PostgreSQL' "$USER" irc.phoenix.net.

-

A list of commercial PostgreSQL support is available at A list of commercial support companies is available at http://www.postgresql.org/users-lounge/commercial-support.html.

1.7) What is the latest release?

@@ -508,8 +502,8 @@ "http://www.PostgreSQL.org/docs/programmer/odbc.htm">ODBC chapter of the Programmer's Guide.

-

2.2) What tools are available for hooking - PostgreSQL to Web pages?

+

2.2) What tools are available for using + PostgreSQL with Web pages?

A nice introduction to Database-backed Web pages can be seen at: http://www.webtools.com

@@ -620,6 +614,9 @@ modifying the file $PGDATA/pg_hba.conf accordingly. This will allow TCP/IP connections.

+

Inoperative semaphores can also cause crashes during heavy + database access.

+

3.6) Why can't I connect to my database from another machine?

@@ -629,13 +626,7 @@ option, and add an appropriate host entry to the file pgsql/data/pg_hba.conf.

-

3.7) All my servers crash under concurrent - table access. Why?

- -

This problem can be caused by a kernel that is not configured to - support semaphores.

- -

3.8) How do I tune the database engine for +

3.7) How do I tune the database engine for better performance?

Certainly, indices can speed up queries. The @@ -672,7 +663,7 @@ data in tables to match an index. See the CLUSTER manual page for more details.

-

3.9) What debugging features are +

3.8) What debugging features are available?

PostgreSQL has several features that report status information @@ -728,7 +719,7 @@ in the pgsql/data/base/dbname directory. The client profile file will be put in the client's current directory.

-

3.10) I get 'Sorry, too many clients' when +

3.9) I get 'Sorry, too many clients' when trying to connect. Why?

You need to increase the postmaster's limit on how many @@ -763,7 +754,7 @@ the MaxBackendId constant in include/storage/sinvaladt.h.

-

3.11) What are the pg_sorttempNNN.NN +

3.10) What are the pg_sorttempNNN.NN files in my database directory?

They are temporary files generated by the query executor. For @@ -1303,4 +1294,3 @@ or compiler compute the dependencies automatically.

-