functions.

</para>

<para>

<filename>amcheck</filename> functions may be used only by superusers.

<filename>amcheck</filename> functions mayonlybe used by superusers.

</para>

<sect2>

| pg_amop_fam_strat_index | 5

(10 rows)

</screen>

This example shows a session that performs verification of every

catalog index in the database <quote>test</quote>. Details of just

the 10 largest indexes verified are displayed. Verification of

the presence of heap tuples as index tuples is requested for

unique indexes only. Since no error is raised, all indexes

tested appear to be logically consistent. Naturally, this query

could easily be changed to call

<function>bt_index_check</function> for every index in the

This example shows a session that performs verification of the

10 largest catalog indexes in the database <quote>test</quote>.

Verification of the presence of heap tuples as index tuples is

requested for the subset that are unique indexes. Since no

error is raised, all indexes tested appear to be logically

consistent. Naturally, this query could easily be changed to

call <function>bt_index_check</function> for every index in the

database where verification is supported.

</para>

<para>

</listitem>

<listitem>

<para>

Corruption caused by faulty RAM, and the broader memory subsystem

and operating system.

Corruption caused by faulty RAM, or the broader memory subsystem.

</para>

<para>

<productname>PostgreSQL</productname> does not protect against correctable