mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Document relminmxid and datminmxid

Browse Source 
I introduced these new fields in 0ac5ad5134f27 but neglected to add them
to the system catalogs section of the docs.

Per Thom Brown in message
CAA-aLv7UiO=Whiq3MVbsEqSyQRthuX8Tb_RLyBuQt0KQBp=6EQ@mail.gmail.com
This commit is contained in:
Alvaro Herrera 2013-06-27 15:20:33 -04:00
parent 263865a489
commit 863fad1bcc
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
doc/src/sgml/catalogs.sgml
View File

@ -1884,6 +1884,19 @@
</entry>
</row>
<row>
<entry><structfield>relminmxid</structfield></entry>
<entry><type>xid</type></entry>
<entry></entry>
<entry>
All multitransaction IDs before this one have been replaced by a
transaction ID in this table. This is used to track
whether the table needs to be vacuumed in order to prevent multitransaction ID
ID wraparound or to allow <literal>pg_clog</> to be shrunk. Zero
(<symbol>InvalidTransactionId</symbol>) if the relation is not a table.
</entry>
</row>
<row>
<entry><structfield>relacl</structfield></entry>
<entry><type>aclitem[]</type></entry>
@ -2621,6 +2634,20 @@
</entry>
</row>
<row>
<entry><structfield>datminmxid</structfield></entry>
<entry><type>xid</type></entry>
<entry></entry>
<entry>
All multitransaction IDs before this one have been replaced with a
transaction ID in this database. This is used to
track whether the database needs to be vacuumed in order to prevent
transaction ID wraparound or to allow <literal>pg_clog</> to be shrunk.
It is the minimum of the per-table
<structname>pg_class</>.<structfield>relminmxid</> values.
</entry>
</row>
<row>
<entry><structfield>dattablespace</structfield></entry>
<entry><type>oid</type></entry>