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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ref/pg_resetwal.sgml | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/pg_resetwal.sgml b/doc/src/sgml/ref/pg_resetwal.sgml index defaf170dc6..89ddca47e90 100644 --- a/doc/src/sgml/ref/pg_resetwal.sgml +++ b/doc/src/sgml/ref/pg_resetwal.sgml @@ -248,6 +248,25 @@ PostgreSQL documentation </varlistentry> <varlistentry> + <term><option>-u <replaceable class="parameter">xid</replaceable></option></term> + <listitem> + <para> + Manually set the oldest unfrozen transaction ID. + </para> + + <para> + A safe value can be determined by looking for the numerically smallest + file name in the directory <filename>pg_xact</filename> under the data directory + and then multiplying by 1048576 (0x100000). Note that the file names are in + hexadecimal. It is usually easiest to specify the option value in + hexadecimal too. For example, if <filename>0007</filename> is the smallest entry + in <filename>pg_xact</filename>, <literal>-u 0x700000</literal> will work (five + trailing zeroes provide the proper multiplier). + </para> + </listitem> + </varlistentry> + + <varlistentry> <term><option>-x</option> <replaceable class="parameter">xid</replaceable></term> <listitem> <para> |