<listitem>
<para>
<literal>Lock</>: The backend is waiting for a heavyweight lock.
- Heayweight locks, also known as lock manager locks or simply locks,
+ Heavyweight locks, also known as lock manager locks or simply locks,
primarily protect SQL-visible objects such as tables. However,
they are also used to ensure mutual exclusion for certain internal
operations such as relation extension. <literal>wait_event</> will
<row>
<entry morerows="15"><literal>LWLockTranche</></entry>
<entry><literal>clog</></entry>
- <entry>Waiting for I/O on a clog (transcation status) buffer.</entry>
+ <entry>Waiting for I/O on a clog (transaction status) buffer.</entry>
</row>
<row>
<entry><literal>commit_timestamp</></entry>