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Update FAQ.

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Bruce Momjian
2001-02-15 22:21:23 +00:00
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doc/src/FAQ/FAQ.html
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@ -127,15 +127,17 @@
<SMALL>TID</SMALL>?<BR>
<A href="#4.18">4.18</A>) What is the meaning of some of the terms
used in PostgreSQL?<BR>
<A href="#4.19">4.19</A>) How do I tell what PostgreSQL version I
<A href="#4.19">4.19</A>) Why do I get the error <I>"ERROR:
Memory exhausted in AllocSetAlloc()?"</I><BR>
<A href="#4.20">4.20</A>) How do I tell what PostgreSQL version I
am running? <BR>
<A href="#4.20">4.20</A>) My large-object operations get
<A href="#4.21">4.21</A>) My large-object operations get
<I>invalid large obj descriptor.</I> Why?<BR>
<A href="#4.21">4.21</A>) How do I create a column that will
<A href="#4.22">4.22</A>) How do I create a column that will
default to the current time?<BR>
<A href="#4.22">4.22</A>) Why are my subqueries using
<A href="#4.23">4.23</A>) Why are my subqueries using
<CODE><SMALL>IN</SMALL></CODE> so slow?<BR>
<A href="#4.23">4.23</A>) How do I perform an outer join?<BR>
<A href="#4.24">4.24</A>) How do I perform an outer join?<BR>
<CENTER>
@ -147,7 +149,7 @@
and functions to PostgreSQL?<BR>
<A href="#5.3">5.3</A>) How do I write a C function to return a
tuple?<BR>
<A href="#5.4">5.4</A>) I have changed a source file. Why does the
<A href="#5.4">5.3</A>) I have changed a source file. Why does the
recompile not see the change?<BR>
<HR>
@ -1132,13 +1134,32 @@ BYTEA bytea variable-length byte array (null-safe)
<P>A list of general database terms can be found at: <A href=
"http://www.comptechnews.com/~reaster/dbdesign.html">http://www.comptechnews.com/~reaster/dbdesign.html</A></P>
<H4><A name="4.19">4.19</A>) How do I tell what PostgreSQL version
<H4><A name="4.19">4.19</A>) Why do I get the error <I>"ERROR:
Memory exhausted in AllocSetAlloc()?"</I><BR>
</H4>
<P>It is possible you have run out of virtual memory on your
system, or your kernel has a low limit for certain resources. Try
this before starting the <I>postmaster:</I></P>
<PRE>
ulimit -d 262144
limit datasize 256m
</PRE>
Depending on your shell, only one of these may succeed, but it will
set your process data segment limit much higher and perhaps allow
the query to complete. This command applies to the current process,
and all subprocesses created after the command is run. If you are
having a problem with the <SMALL>SQL</SMALL> client because the
backend is returning too much data, try it before starting the
client.
<H4><A name="4.20">4.20</A>) How do I tell what PostgreSQL version
I am running?<BR>
</H4>
<P>From <I>psql,</I> type <CODE>select version();</CODE></P>
<H4><A name="4.20">4.20</A>) My large-object operations get
<H4><A name="4.21">4.21</A>) My large-object operations get
<I>invalid large obj descriptor.</I> Why?<BR>
</H4>
@ -1155,7 +1176,7 @@ BYTEA bytea variable-length byte array (null-safe)
<P>If you are using a client interface like <SMALL>ODBC</SMALL> you
may need to set <CODE>auto-commit off.</CODE></P>
<H4><A name="4.21">4.21</A>) How do I create a column that will
<H4><A name="4.22">4.22</A>) How do I create a column that will
default to the current time?<BR>
</H4>
@ -1165,7 +1186,7 @@ BYTEA bytea variable-length byte array (null-safe)
</CODE>
</PRE>
<H4><A name="4.22">4.22</A>) Why are my subqueries using
<H4><A name="4.23">4.23</A>) Why are my subqueries using
<CODE><SMALL>IN</SMALL></CODE> so slow?<BR>
</H4>
@ -1188,7 +1209,7 @@ BYTEA bytea variable-length byte array (null-safe)
</PRE>
We hope to fix this limitation in a future release.
<H4><A name="4.23">4.23</A>) How do I perform an outer join?<BR>
<H4><A name="4.24">4.24</A>) How do I perform an outer join?<BR>
</H4>
<P>PostgreSQL 7.1 and later supports outer joins using the SQL