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| -rw-r--r-- | doc/FAQ | 34 | ||||
| -rw-r--r-- | doc/src/FAQ/FAQ.html | 42 |
2 files changed, 30 insertions, 46 deletions
@@ -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 4cd94ab4c41..477ca24a3c4 100644 --- a/doc/src/FAQ/FAQ.html +++ b/doc/src/FAQ/FAQ.html @@ -53,8 +53,8 @@ </CENTER> <A href="#2.1">2.1</A>) Are there <SMALL>ODBC</SMALL> drivers for PostgreSQL?<BR> - <A href="#2.2">2.2</A>) What tools are available for hooking - PostgreSQL to Web pages?<BR> + <A href="#2.2">2.2</A>) What tools are available for use PostgreSQL + with Web pages?<BR> <A href="#2.3">2.3</A>) Does PostgreSQL have a graphical user interface? A report generator? An embedded query language interface?<BR> @@ -77,14 +77,12 @@ accessing my PostgreSQL database?<BR> <A href="#3.6">3.6</A>) Why can't I connect to my database from another machine?<BR> - <A href="#3.7">3.7</A>) All my servers crash under concurrent - table access. Why?<BR> - <A href="#3.8">3.8</A>) How do I tune the database engine for + <A href="#3.7">3.7</A>) How do I tune the database engine for better performance?<BR> - <A href="#3.9">3.9</A>) What debugging features are available?<BR> - <A href="#3.10">3.10</A>) I get <I>"Sorry, too many clients"</I> + <A href="#3.8">3.8</A>) What debugging features are available?<BR> + <A href="#3.9">3.9</A>) I get <I>"Sorry, too many clients"</I> when trying to connect. Why?<BR> - <A href="#3.11">3.11</A>) What are the <I>pg_sorttempNNN.NN</I> + <A href="#3.10">3.10</A>) What are the <I>pg_sorttempNNN.NN</I> files in my database directory?<BR> @@ -260,10 +258,6 @@ <H4><A name="1.6">1.6</A>) Where can I get support?</H4> - <P>There is no support for PostgreSQL from the University of - California, Berkeley. It is maintained through volunteer - effort.</P> - <P>The main mailing list is: <A href= "mailto:pgsql-general@PostgreSQL.org">pgsql-general@PostgreSQL.org</A>. It is available for discussion of matters pertaining to PostgreSQL. @@ -316,7 +310,7 @@ <I>#PostgreSQL.</I> I use the unix command <CODE>irc -c '#PostgreSQL' "$USER" irc.phoenix.net.</CODE></P> - <P>A list of commercial PostgreSQL support is available at <A href= + <P>A list of commercial support companies is available at <A href= "http://www.postgresql.org/users-lounge/commercial-support.html">http://www.postgresql.org/users-lounge/commercial-support.html</A>.</P> <H4><A name="1.7">1.7</A>) What is the latest release?</H4> @@ -508,8 +502,8 @@ "http://www.PostgreSQL.org/docs/programmer/odbc.htm">ODBC chapter of the Programmer's Guide</A>.</P> - <H4><A name="2.2">2.2</A>) What tools are available for hooking - PostgreSQL to Web pages?</H4> + <H4><A name="2.2">2.2</A>) What tools are available for using + PostgreSQL with Web pages?</H4> <P>A nice introduction to Database-backed Web pages can be seen at: <A href="http://www.webtools.com">http://www.webtools.com</A></P> @@ -620,6 +614,9 @@ modifying the file <I>$PGDATA/pg_hba.conf</I> accordingly. This will allow TCP/IP connections.</P> + <P>Inoperative semaphores can also cause crashes during heavy + database access.</P> + <H4><A name="3.6">3.6</A>) Why can't I connect to my database from another machine?</H4> @@ -629,13 +626,7 @@ option, and add an appropriate host entry to the file <I>pgsql/data/pg_hba.conf</I>.</P> - <H4><A name="3.7">3.7</A>) All my servers crash under concurrent - table access. Why?</H4> - - <P>This problem can be caused by a kernel that is not configured to - support semaphores.</P> - - <H4><A name="3.8">3.8</A>) How do I tune the database engine for + <H4><A name="3.7">3.7</A>) How do I tune the database engine for better performance?</H4> <P>Certainly, indices can speed up queries. The @@ -672,7 +663,7 @@ data in tables to match an index. See the <SMALL>CLUSTER</SMALL> manual page for more details.</P> - <H4><A name="3.9">3.9</A>) What debugging features are + <H4><A name="3.8">3.8</A>) What debugging features are available?</H4> <P>PostgreSQL has several features that report status information @@ -728,7 +719,7 @@ in the <I>pgsql/data/base/dbname</I> directory. The client profile file will be put in the client's current directory.</P> - <H4><A name="3.10">3.10</A>) I get 'Sorry, too many clients' when + <H4><A name="3.9">3.9</A>) I get 'Sorry, too many clients' when trying to connect. Why?</H4> <P>You need to increase the <I>postmaster's</I> limit on how many @@ -763,7 +754,7 @@ the MaxBackendId constant in <I>include/storage/sinvaladt.h.</I></P> - <H4><A name="3.11">3.11</A>) What are the <I>pg_sorttempNNN.NN</I> + <H4><A name="3.10">3.10</A>) What are the <I>pg_sorttempNNN.NN</I> files in my database directory?</H4> <P>They are temporary files generated by the query executor. For @@ -1303,4 +1294,3 @@ or compiler compute the dependencies automatically.</P> </BODY> </HTML> - |