136 lines
8.9 KiB
HTML
136 lines
8.9 KiB
HTML
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<meta name="DC.Title" content="Database manager indexes advised system table" />
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<meta name="abstract" content="This topic describes the indexes advised system table." />
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<title>Database manager indexes advised system table</title>
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<body id="rzajqindexadvisor"><a name="rzajqindexadvisor"><!-- --></a>
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<img src="./delta.gif" alt="Start of change" /><!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Database manager indexes advised system table</h1>
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<div><p>This topic describes the indexes advised system table.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. SYSIXADV system table</caption><thead align="left"><tr><th valign="top" width="29.577464788732392%" id="d0e22">Column name</th>
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<th valign="top" width="14.929577464788732%" id="d0e24">System column name</th>
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<th valign="top" width="17.183098591549296%" id="d0e26">Data type</th>
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<th valign="top" width="38.309859154929576%" id="d0e28">Description</th>
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</tr>
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</thead>
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<tbody><tr valign="top"><td valign="top" width="29.577464788732392%" headers="d0e22 ">TABLE_NAME</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">TBNAME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">VARCHAR(258)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Table over which an index is advised</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">TABLE_SCHEMA</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">DBNAME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(10)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Schema containing the table</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">SYSTEM_TABLE_NAME</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">SYS_TNAME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(10)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">System table name on which the index is advised</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">PARTITION_NAME</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">TBMEMBER</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(10)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Partition detail for the index</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">KEY_COLUMNS_ADVISED</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">KEYSADV</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">VARCHAR(16000)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Column names for the advised index</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">LEADING_COLUMN_KEYS</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">LEADKEYS</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">VARCHAR(16000)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Leading, Order Independent keys. the keys at the beginning
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of the KEY_COLUMNS_ADVISED field which could be reordered and still satisfy
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the index being advised.</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">INDEX_TYPE</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">INDEX_TYPE</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(14)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Radix (default) or EVI</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">LAST_ADVISED</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">LASTADV</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">TIMESTAMP</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Last time this row was updated</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">TIMES_ADVISED</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">TIMESADV</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">BIGTINT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Number of times this index has been advised</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">ESTIMATED_CREATION_TIME</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">ESTTIME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">INT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Estimated number of seconds for index creation</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">REASON_ADVISED</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">REASON</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(2)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Coded reason why index was advised</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">LOGICAL_PAGE_SIZE</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">PAGESIZE</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">INT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Recommended page size for index</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">MOST_EXPENSIVE_QUERY</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">QUERYCOST</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">INT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Execution time in seconds of the query</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">AVERAGE_QUERY_ESTIMATE</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">QUERYEST</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">INT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Average execution time in seconds of the query</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">TABLE_SIZE</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">TABLE_SIZE</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">BIGINT</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Number of rows in table when the index was advised</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">NLSS_TABLE_NAME</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">NLSSNAME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(10)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">NLSS table to use for the index</td>
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</tr>
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<tr><td valign="top" width="29.577464788732392%" headers="d0e22 ">NLSS_TABLE_SCHEMA</td>
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<td valign="top" width="14.929577464788732%" headers="d0e24 ">NLSSDBNAME</td>
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<td valign="top" width="17.183098591549296%" headers="d0e26 ">CHAR(10)</td>
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<td valign="top" width="38.309859154929576%" headers="d0e28 ">Library name of the NLSS table</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <img src="./delta.gif" alt="Start of change" /><a href="rzajqshowindexes.htm" title="You can display index advisor information from the optimizer using iSeries Navigator.">Display index advisor information</a><img src="./deltaend.gif" alt="End of change" /></div>
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</div>
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</div>
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<img src="./deltaend.gif" alt="End of change" /></body>
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</html>
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