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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
| commit | 293913568e6a7a86fd1479e1cff8e2ecb58d6568 (patch) | |
| tree | fc3b469a3ec5ab71b36ea97cc7aaddb838423a0c /doc/src/sgml/html/view-pg-prepared-xacts.html | |
| parent | Initial commit. (diff) | |
| download | postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.tar.xz postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.zip | |
Adding upstream version 16.2.upstream/16.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/src/sgml/html/view-pg-prepared-xacts.html')
| -rw-r--r-- | doc/src/sgml/html/view-pg-prepared-xacts.html | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/doc/src/sgml/html/view-pg-prepared-xacts.html b/doc/src/sgml/html/view-pg-prepared-xacts.html new file mode 100644 index 0000000..83f44a0 --- /dev/null +++ b/doc/src/sgml/html/view-pg-prepared-xacts.html @@ -0,0 +1,50 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>54.16. pg_prepared_xacts</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="view-pg-prepared-statements.html" title="54.15. pg_prepared_statements" /><link rel="next" href="view-pg-publication-tables.html" title="54.17. pg_publication_tables" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">54.16. <code class="structname">pg_prepared_xacts</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="view-pg-prepared-statements.html" title="54.15. pg_prepared_statements">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="views.html" title="Chapter 54. System Views">Up</a></td><th width="60%" align="center">Chapter 54. System Views</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="view-pg-publication-tables.html" title="54.17. pg_publication_tables">Next</a></td></tr></table><hr /></div><div class="sect1" id="VIEW-PG-PREPARED-XACTS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">54.16. <code class="structname">pg_prepared_xacts</code> <a href="#VIEW-PG-PREPARED-XACTS" class="id_link">#</a></h2></div></div></div><a id="id-1.10.5.20.2" class="indexterm"></a><p> + The view <code class="structname">pg_prepared_xacts</code> displays + information about transactions that are currently prepared for two-phase + commit (see <a class="xref" href="sql-prepare-transaction.html" title="PREPARE TRANSACTION"><span class="refentrytitle">PREPARE TRANSACTION</span></a> for details). + </p><p> + <code class="structname">pg_prepared_xacts</code> contains one row per prepared + transaction. An entry is removed when the transaction is committed or + rolled back. + </p><div class="table" id="id-1.10.5.20.5"><p class="title"><strong>Table 54.16. <code class="structname">pg_prepared_xacts</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_prepared_xacts Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition"> + Column Type + </p> + <p> + Description + </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">transaction</code> <code class="type">xid</code> + </p> + <p> + Numeric transaction identifier of the prepared transaction + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">gid</code> <code class="type">text</code> + </p> + <p> + Global transaction identifier that was assigned to the transaction + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">prepared</code> <code class="type">timestamptz</code> + </p> + <p> + Time at which the transaction was prepared for commit + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">owner</code> <code class="type">name</code> + (references <a class="link" href="catalog-pg-authid.html" title="53.8. pg_authid"><code class="structname">pg_authid</code></a>.<code class="structfield">rolname</code>) + </p> + <p> + Name of the user that executed the transaction + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">database</code> <code class="type">name</code> + (references <a class="link" href="catalog-pg-database.html" title="53.15. pg_database"><code class="structname">pg_database</code></a>.<code class="structfield">datname</code>) + </p> + <p> + Name of the database in which the transaction was executed + </p></td></tr></tbody></table></div></div><br class="table-break" /><p> + When the <code class="structname">pg_prepared_xacts</code> view is accessed, the + internal transaction manager data structures are momentarily locked, and + a copy is made for the view to display. This ensures that the + view produces a consistent set of results, while not blocking + normal operations longer than necessary. Nonetheless + there could be some impact on database performance if this view is + frequently accessed. + </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="view-pg-prepared-statements.html" title="54.15. pg_prepared_statements">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="views.html" title="Chapter 54. System Views">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="view-pg-publication-tables.html" title="54.17. pg_publication_tables">Next</a></td></tr><tr><td width="40%" align="left" valign="top">54.15. <code class="structname">pg_prepared_statements</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 54.17. <code class="structname">pg_publication_tables</code></td></tr></table></div></body></html>
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