oracle10g

问题 We're getting this error once a day on a script that runs every two hours, but at different times of the day. ERROR at line 1: ORA-04068: existing state of packages has been discarded ORA-04061: existing state of package body "PACKAGE.NAME" has been invalidated ORA-06508: PL/SQL: could not find program unit being called: "PACKAGE.NAME" ORA-06512: at line 1 Could someone list what conditions can cause this error so that we could investigate? Thanks. UPDATE: Would executing 'ALTER SESSION CLOSE

问题 I did a terrible mistake on my work, I executed an updated query on a oracle table without the 'where' clause and everything changed on this table, I was wondering if there is any way to restore the data on a table. I know I can use Flashback, but Is there another way to do that? If you know how to make a flashback table in oracle, please let me know. I'm using Oracle 10g R2 10.2.0.1 回答1: First, did you commit the change? If not, you can simply issue a rollback to revert your changes.

问题 I am trying to find a reliable method for matching duplicate person records within the database. The data has some serious data quality issues which I am also trying to fix but until I have the go-ahead to do so I am stuck with the data I have got. The table columns available to me are: SURNAME VARCHAR2(43) FORENAME VARCHAR2(38) BIRTH_DATE DATE ADDRESS_LINE1 VARCHAR2(60) ADDRESS_LINE2 VARCHAR2(60) ADDRESS_LINE3 VARCHAR2(60) ADDRESS_LINE4 VARCHAR2(60) ADDRESS_LINE5 VARCHAR2(60) POSTCODE

问题 I am receiving a "wildcard query expansion resulted in too many terms" error when executing a query similar to the following: SELECT * FROM table_a WHERE contains(clob_field, '%a%') > 0; Does anyone know a workaround/solution to this problem? 回答1: According to this, you may need to increase the wildcard_maxterms parameter, or take further steps. See the link for details (I'm not an expert in Oracle Text though). 来源： https://stackoverflow.com/questions/2554054/wildcard-query-expansion-resulted

问题 Given a table like: CREATE TABLE "MyTable" ( "MyColumn" NUMBER NOT NULL ); I want to create a view like: CREATE VIEW "MyView" AS SELECT CAST("MyColumn" AS BINARY_DOUBLE) AS "MyColumn" FROM "MyTable"; Only where the column "MyColumn" is "NOT NULL". In SQL Server this is pretty straight forward: CREATE VIEW [MyView] AS SELECT ISNULL(CAST([MyColumn] AS Float), 0.0) AS [MyColumn] FROM [MyTable]; However the Oracle equivalent results in a "NULL" column: CREATE VIEW "MyView" AS SELECT NVL(CAST(

问题 I'm using Hibernate Tools 3.2.1.GA with the Spring version 3.0.2. I'm trying to retrieve the id of the last inserted row into the Oracle(10g) database as follows. Session session=NewHibernateUtil.getSessionFactory().getCurrentSession(); session.beginTransaction(); Country c=new Country(); c.setCountryId(new BigDecimal(0)); c.setCountryName(request.getParameter("txtCountryName")); c.setCountryCode(request.getParameter("txtCountryCode")); Zone z=(Zone) session.get(Zone.class, new BigDecimal

问题 When i run the following query: Select tm.product_id, listagg(tm.book_id || '(' || tm.score || ')',',') within group (order by tm.product_id) as matches from tl_product_match tm where tm.book_id is not null group by tm.product_id Oracle returns the following error: ORA-01489: result of string concatenation is too long I know that the reason it is failing is that the listagg function is trying to concatenate a the values which are greater than 4000 characters which is not supported. I have

问题 When i run the following query: Select tm.product_id, listagg(tm.book_id || '(' || tm.score || ')',',') within group (order by tm.product_id) as matches from tl_product_match tm where tm.book_id is not null group by tm.product_id Oracle returns the following error: ORA-01489: result of string concatenation is too long I know that the reason it is failing is that the listagg function is trying to concatenate a the values which are greater than 4000 characters which is not supported. I have

问题 Is there a performance difference between using a BETWEEN clause or using <= AND >= comparisons? i.e. these two queries: SELECT * FROM table WHERE year BETWEEN '2005' AND '2010'; ...and SELECT * FROM table WHERE year >= '2005' AND year <= '2010'; In this example, the year column is VARCHAR2(4) with an index on it. 回答1: There is no difference. Note that BETWEEN is always inclusive and sensitive to the order of the arguments. BETWEEN '2010' AND '2005' will never be TRUE . 回答2: There is no

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Oracle RAC and sequences I have a Oracle RAC configured in my local environment. I analyzed a problem with Sequnce that the number generated by nextVal are not ordered. Suppose First time I get value as 1 , the second time get get value as 21 (I have configured the sequence as with default CACHE 20 and NOORDER ). On searching I found the solution that, I need to Order the sequence. I have question which is