How do I check my gather schema stats status?

“how to check last gather stats on table in oracle” Code Answer

  1. SELECT ST. TABLE_NAME, ST. PARTITION_NAME, HIGH_VALUE, ST.
  2. ST. BLOCKS, ST.
  3. FROM DBA_TAB_STATISTICS ST.
  4. LEFT JOIN DBA_TAB_PARTITIONS PAR.
  5. ON PAR. TABLE_NAME = ST.
  6. WHERE ST. OWNER = ‘MY_OWNER’
  7. AND ST. TABLE_NAME = ‘MY_TABLE’
  8. ORDER BY PARTITION_NAME;

When should we gather stats in Oracle?

14.2 Automatic Statistics Gathering. The recommended approach to gathering statistics is to allow Oracle to automatically gather the statistics. Oracle gathers statistics on all database objects automatically and maintains those statistics in a regularly-scheduled maintenance job.

How do you gather statistics in Oracle?

To estimate statistics, Oracle selects a random sample of data. You can specify the sampling percentage (Oracle Corporation recommends using DBMS_STATS . AUTO_SAMPLE_SIZE ) and whether sampling should be based on rows or blocks. When in doubt, use row sampling.

How long does it take to gather schema stats in Oracle?

Regarding gather stats for specific schema: Gather stats for INV schema (171GB) only sometime complete within 12hrs, but some times keeps running till monday morning and needs to be terminated.

Why We Run gather schema statistics?

4) What is ‘Gather Schema Statistics’? The cost-based optimization (CBO) uses these statistics to calculate the selectivity of prediction and to estimate the cost of each execution plan.

What is DBMS_STATS Flush_database_monitoring_info?

A FLUSH_DATABASE_MONITORING_INFO is Procedure in DMBS_STATS package. This procedure flush monitoring information for all tables. Corresponding entries in the. *_TAB_MODIFICATIONS, *_TAB_STATISTICS and *_IND_STATISTICS views are updated immediately. These views are populated only for tables with the MONITORING attribute …

How much time gather stats take?

What is Estimate percent in gather stats?

This procedure has an estimate_percent parameter, which specifies the sampling percentage of the statistics gathering. The users can specify any number between 0 ~ 100 for this parameter. For example, suppose you have a table BIGT, you can specify a 1% sampling percentage as follows: Copy code snippet.