原因:View v$sqlbind_capture corresponds to fixed table X$KQLFBC table which is mainly used to store variables associated with the binding of data. This error can be noticed in large databases using large amount of binding variables. 措施: 1. Collect statistics on following fixed table: SQL> ...
作用:DBMS_STATS.GATHER_TABLE_STATS统计表,列,索引的统计信息. DBMS_STATS.GATHER_TABLE_STATS的语法如下: DBMS_STATS.GATHER_TABLE_STATS ( ownname VARCHAR2, tabname VARCHAR2, partname VARCHAR2, estimate_percent NUMBER, block_sample BOOLEAN, method_opt VARCHAR2, degree NUMBER, granularity VARCHAR2, ...
SQL> exec fnd_stats.gather_schema_statistics('APPLSYS'); Where 'APPLSYS' is the module (schema) that requires new statistics.If only a few tables require to have their statistics gathered, use the corresponding concurrent program to gather stats by table, or execute equivalent FND_STATS procedur...
If there are severe issues, diagnose what table gathering is 'stuck' on and lock that table's statistics as a short term workaround. From a long term solution standpoint, it would be preferable to have the statistics but having a running system is likely to be the priority. 如果有严重问题...
DBA_TABLES describes all relational tables in the database.USER_TABLES describes the relational tables owned by the current user. This view does not display the OWNER column.Note:Columns marked with an asterisk (*) are populated only if you collect statistics on the table with the ...
“Column names followed by an asterisk are populated only if you collect statistics on the index using the DBMS_STATS package.“ 即使用DBMS_STATS包收集索引统计信息的时候,CLUSTERING_FACTOR才会有值。 从dba_indexes中可以看出id1对应的索引CF只有204,id2对应的索引CF有99481,表的数据量是100000,就是说这...
In Oracle Service Bus run time statistics are computed at regular intervals, within every aggregation interval. These regular sub intervals are known as the sample interval. The duration of the sample interval depends on the aggregation interval. Table 44-1 gives the length of sample interval for...
Prior to EBR, this requirement would force testers to run on a duplicate copy of a potentially large database, and perform their testing outside of a real world production scenario. With EBR, you can create a new version of a table with a different data structure that resides in the ...
This reduces memory usage on the database server and increases system throughput. Use the ANALYZE command to collect statistics that can be used by Oracle to implement a cost-based approach to SQL statement optimization. You can supply additional "hints" to the optimizer as needed. Call the ...
parameter tells Oracle tocontinueto collect histogramsasusual on allofthe columnsintheSALEStable exceptforthePROD_IDcolumn,which should never have a histogram created on it.BEGINdbms_stats.set_table_prefs('SH','SALES','METHOD_OPT','FOR ALL COLUMNS SIZE AUTO, FOR COLUMNS SIZE 1 PROD_ID');...