data connector for oracle and hadoop is disabled

Oracle writes an explanation of saving data into Oracle after determining whether the content is weather. At the beginning of writing a program, I wrote an order processing system. All kinds of warehouse receiving, warehouse picking, order tracking, Waybill tracking, and product mounting and dismounting were completed

1. when you use navicatpremium to open the oracle data table, the message "internal buffer character is too long" is displayed, but it is normal in plsql; 2. when importing oracle data

In oracle, the month or part of data is obtained from the specified date. The oracle date Obtain part of the data from the specified date: Such as month: Select to_CHAR (sysdate, 'mm') from dual; Or: Select extract (month from sysdate) from dual; Or the most stupid met

Except for the reprinted content, this article is original site: reposted from lovewifelovelife-Roger's Oracle technology blog link: when the data file size of windows oracle is 0, a netizen's database is deployed in windows, whic

Tags: Understanding find ORDER BY AIC data from nbsp colleague rowQuery the Eai_salesorder table for today (20180712) data.Method OneSELECT * from Eai_salesorder where eaicreatedate like ' 2018-07-12% '; spents 20.176 secondsMethod TwoSELECT * FROM (SELECT * to Eai_salesorder ORDER BY eaicreatedate Desc) where rownumIt has long been thought that Oracle queries are time-consuming, so when there

Data Recovery after data is accidentally deleted in Oracle and committed Background: Table A is deleted due to data misoperations. -- 1. Back up the current data of Table A first. --

Tags: style SP on data BS code as size databaseSometimes when inserting data with Oracle's database, you need to determine if the data already exists.Our first idea is as follows: first execute the following SQL.Select COUNT (*) isexists from t_test_lll;Then determine if isexists equals 0 or not, and if it equals 0, in

In Oracle, the number type data to_char () is displayed as 0 less, or the value is, Problem description: When the to_char () function is used in Oracle, when the number value is a dec

) - fromMATERIAL M - WHEREM.material_name=P_material_name; - in CURSORGet_wl_material_name2 is - SELECT Count(M.material_name) to fromMca_detail M + WHEREM.material_name=P_material_name andM.mca_noP_mca_no; - BEGIN --m.mca_no the OPENGet_wl_material_code1; * FETCHGet_wl_material_code1 intov_count1; $

Objective:Different types of database interoperability data, due to different database mechanisms, can not be achieved through simple copy and paste, but also due to different file formats, can not simply export files, import database.About Informix Export data, import to Oracle method, after experiment can be used as follows: (although a bit stupid, but for smal

Oracle10g is used in the work. It is often necessary to insert the Event Date and time to a table in it. Note the date and time display and insertion modes of Oracle Oracle 10 Gb is used in work. It is often necessary to insert th

Importing and exporting Oracle Data imp/exp is equivalent to restoring and backing up ORACLE data. The exp command can export data from the remote database server to the local DMP file, and the IMP command can import the DMP file

Today in the operation of the database, found that the data operation error, want to recover, but no transaction, supposedly, set to not default commit transaction, at this time the various operations do not respond to the database. At this point, you can rollback the transaction and undo any uncommitted changes. However, once a commit is made, there is really no