Friday, May 20, 2016
Oracle tips
sqlplus username/password@connect_identifier
spool output.log
select * from users;
spool off;
--disable escape parameter
SET DEFINE OFF
Check language setting for Oracle
select value from nls_database_parameters where parameter='NLS_CHARACTERSET';
Oracle SQL Developer Tools for Visual Studio 2013 - MSI Installer
http://www.oracle.com/technetwork/database/windows/downloads/index-101290.html
1.Remeber to commit after execute the scripts
Tuesday, May 10, 2016
Sunday, May 8, 2016
Performance of bulk operations
1. Efficient way to bulk load data in .NET using SqlBulkCopy: http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlbulkcopy.aspx
This SqlBulkCopy outperforms the ADO.NET SqlDataAdapter bulk operations a lot. Check out the performance analysis in this link: http://sqlblog.com/blogs/alberto_ferrari/archive/2009/11/30/sqlbulkcopy-performance-analysis.aspx
looks very impressive.
2. Bulk Insert using SSIS: http://henkvandervalk.com/speeding-up-ssis-bulk-inserts-into-sql-server (impressive 22GB in over 8 minutes)
3. Data Loading Performance Guide: http://msdn.microsoft.com/en-us/library/dd425070.aspx
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