db2

问题 I try to optimize a query. After every change, I must wait long time that the query is finished. It is really time consuming. Is there any way to see the executed queries and kill/stop them?? 回答1: In the DB2 instance command line, you can type db2 list applications show detail In this list, you should find your process, note the application id. You can use this command to kill it: db2 force application (xx) Where xx is the ID (or a comma-delimited list of IDs). Here is the DB2 for Linux/Unix

问题 I have just installed DB2 Express v10.1 with a personnalised installation where i have checked all composants but i can't find the db2cc binary to launch the control center. someones know if db2cc binary has been renamed, deleted and how launch the control center ? Thanks. 回答1: DB2 Control Center was deprecated starting in DB2 9.7. IBM discontinued it in DB2 10.1. Control Center (and the other related tools) has been replaced by IBM Data Studio. You can download Data Studio 3.1.1, the release

问题 Is there a special syntax to execute a cascade delete on DB2 or is it only possible to create "cascadable" tables by defining them with the "ON DELETE CASCADE" option? What I am trying to achieve is delete other table rows based on a same foreign key when I delete that key, but this is done on an already existing and data-filled database. 回答1: As you stated, you either have to create FKs with an ON DELETE CASCADE clause or to pre-delete the other rows with a subselect-delete. So, if you don't

问题 Given hundreds of database tables in multiple schemas, when creating stored procedures and views, would you recommend using aliases/synonyms or fully qualified name? Given a few schema.table like so, Orders.OrderHeader, Production.LineThroughput, Sales.Opportunities I expect a slight gain in performance with using qualified names but if a table such as Orders.Customers would have to be moved to Sales.Customers, I would either have to alter existing views/procedures referring to Orders

问题 Let's assume I have a table called Cars with 2 columns: CarName , BrandName Now I want to execute this query: select CarName from Cars order by BrandName As you can see, I'd like to return a list, which is sorted by a column, that is not present in the select part of the query. The basic (not optimized) execution sequence of sql commands is: from , where , group by , having , select , order by . The occuring problem is, that BrandName isn't part of what is left after the select command has

问题 Periodically, I get this error message while making a call to a DB2 database using the Odbc connection string. I have tried setting the CommandTimeout of the DbCommand object to multiple values, but I still get the following error. SQL0666 - SQL query exceeds specified time limit or storage limit. Is there a trick to getting this to stop erroring out. It is very odd because the same query sometimes will work and sometimes will timeout. Any help would be appreciated. Thanks! 回答1: I have tried

问题 I have exported some data from schema A (table x)to XML and I am reading the XML and inserting the data into schema B(table y). while inserting the data after 20000 records it says com.ibm.db2.jcc.am.SqlSyntaxErrorException: [jcc][t4][20111][11366][3.63.75] The value of a host variable is too large for its corresponding use. Host variable=1. ERRORCODE=-4461, SQLSTATE=42815 com.ibm.db2.jcc.am.BatchUpdateException: [jcc][t4][102][10040][3.63.75] Batch failure. The batch was submitted, but at

问题 I have a monthly table (only holds rows with first day of month, and unique constraint so only one of each) and a daily table with similar information for each day (same deal, only one per day): Monthly table Daily table ------------- ----------- 2009-01-01 2009-01-01 2009-02-01 2009-01-02 : : : : 2009-09-01 2009-01-31 2009-02-01 : : 2009-02-28 2009-03-01 : : 2009-09-01 but there may be days missing. I want to run a query that returns, for each date in the monthly table, that date along with

问题 I'm new for db2 and overall databases pls help me. I'm creating a table within an existing database, but after executing the create statement i got below error msg, SQL0286N A default table space could not be found with a page size of at least "8192" that authorization ID "DB2ADMIN" is authorized to use. SQLSTATE=42727 SQL0286N A default table space could not be found with a page size of at least "8192" that authorization ID "DB2ADMIN" is authorized to use. Explanation: The CREATE TABLE,

问题 I'm getting the following error while trying to access the Worklight server deployed in my machine: Error 500: Worklight Console initialization failed.Logged Exception: java.lang.RuntimeException: FWLSE0206E: The project /worklight failed to initialize, because the project database schema for data source jdbc:db2://xxxxx:50000/WRKLGHT is from version N/A, which is not supported by the server from version 6.1.0.00.20131126-0630. Use the Worklight ant tasks to upgrade the project database