query result cache in oracle 11g
update for 11g release 2: table-level result cache mode From 11g Release 2, it is possible to define the result cache mode at a table level (in addition to the query, session or system levels supported in 11g Release 1). According to what we now know about the result cache mechanism, we ran 4 different SQL statements above (the same SQL statement with 4 different inputs)
After the SELECT clause, we must have an INTO clause listing variables, one for each attribute in the SELECT clause, into which the components of the retrieved tuple must be placed. On the other hand, should the previous definition be a different procedure of the same name, you will not be warned, and the old procedure will be lost
The specification is the interface to your applications; it declares the types, constants, variables, exceptions, cursors, and subprograms available for use. For example, by designing applications around a library of stored procedures and functions, you can avoid redundant coding and increase your productivity
In that case, set the buffer size to a larger value, eg.: set serveroutput on size 200000 If you forget to set serveroutput on type SET SERVEROUTPUT ON once you remember, and then EXEC NULL;. When a trigger tries to reference a table that is in state of flux (being changed), it is considered "mutating" and raises an error since Oracle should not return data that has not yet reached its final state
reply thatjeffsmith posted 1 year ago Try the query again, but only a few rows, does that work? reply Greg posted 1 year ago Hi, I am trying to export data from SQL*Developer in a fixed-width format. reply Anabol X1 Muscle posted 2 months ago Asking questions are really good thing if you are not understanding something completely, but this article presents nice understanding yet
script the source table and then run the script on destination, where you want to create the table, this will create a table with the same name with all the features of the source table. Tha query will give you properties for that table (columns, keys, values, etc.) I want to pull the same properties from a result set that is not already a table
flashback version query in oracle 10g
further reading For more information on flashback query concepts, including version and transaction queries, see the SQL Reference and the Applicaton Developers Guide. Flashback version query therefore includes several pseudo-columns to describe each version of our data, which we can now use to determine the actual operations and change times
See Also: Oracle Database SQL Language Reference for more information about the SQL statement SET TRANSACTION Overriding Default Locking By default, Oracle Database locks data structures automatically, which lets different applications write to the same data structures without harming each other's data or coordinating with each other. See Also: Oracle Database SQL Language Reference for more information about CURSOR expressions, including restrictions Example 6-34 declares and defines an explicit cursor for a query that includes a cursor expression
SQL FAQ - Oracle FAQ
COMMIT - save work done SAVEPOINT - identify a point in a transaction to which you can later roll back ROLLBACK - undo the modification I made since the last COMMIT SET TRANSACTION - Change transaction options like isolation level and what rollback segment to use SET ROLE - set the current active roles DML are not auto-commit. If you include the SAMPLE clause within a multi-table or remote query, you will get a parse error or "ORA-30561: SAMPLE option not allowed in statement with multiple table references"
Oracle SQL select distinct query to return specific number of rows - Stack Overflow
Could the select distinct be to costly? I tried without nested queries first, but the problem was that I could get as few as 1 row in the results set if the first 1000 rows contained the same destName.. I'm trying to design a query that will return distinct destName having nextTime within a specific interval and the returned number of rows should be maximum one thousand
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