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blog.tanelpoder.com | ||
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tanelpoder.com
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| | | | | On Exadata (or when setting cell_offload_plan_display = always on non-Exadata) you may see the storage() predicate in addition to the usual access() and filter() predicates in an execution plan: SQL> SELECT * FROM dual WHERE dummy = 'X'; D - X Check the plan: SQL> @x Display execution plan for last statement for this session from library cache... PLAN_TABLE_OUTPUT ------------------------------------------------------------------------------------------------------------------------ SQL_ID dtjs9v7q7zj1g, child number 0 ------------------------------------- SELECT * FROM dual WHERE dummy = 'X' Plan hash value: 272002086 ------------------------------------------------------------------------ | Id | Operation | Name | E-Rows |E-Bytes| Cost (%CPU)| ------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | | | 2 (100)| |* 1 | TABLE ACCESS STORAGE FULL| DUAL | 1 | 2 | 2 (0)| ------------------------------------------------------------------------ Predicate Information (identified by operation id): --------------------------------------------------- 1 - storage("DUMMY"='X') filter("DUMMY"='X') The access() and filter() predicates come from the corresponding ACCESS_PREDICATES and FILTER_PREDICATES columns in V$SQL_PLAN. But there's no STORAGE_PREDICATES column there! - Linux, Oracle, SQL performance tuning and troubleshooting - consulting & training. | |
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www.dbaglobe.com
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| | | | | A blog about on new technologie. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc. | |
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kerryosborne.oracle-guy.com
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carlos-sierra.net
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| | | If you have access to some other graphical tool that displays time series on multiple dimensions for one or a set of SQL statements from an Oracle database, then you may not need "SQL Stats Analytics". In the other hand, if you have no such tool, or even more restricting, if you can only access... | ||
