If I need to copy a stored procedure SP from one SQL Server to another I right click on the SP in SSMS and select Script Stored Procedure as CREATE to New Query. The shortest, fastest, and easiest way to compare two tables in SQL Server UNION When you have two tables or resultsets from SELECT statements that you wish to. SQL Server and Oracle Making the Connection Linked servers can bring your SQL Server and Oracle databases together. Suppose you have a Microsoft. NET enabled Internet ordering system but your warranty system is a legacy Oracle database application. You dont want to bill your commercial customers when they place orders for warranty replacement parts, so you need realtime answers from your Oracle database. Creating a linked server lets you use SQL Server to query your Oracle database in realtime to find out who your existing customers are. When your data is distributed across several databases on multiple SQL Servers, linked servers let you run queries distributed across those servers. When all the servers are SQL Servers, configuration is easy, and SQL Server Books Online BOL covers everything you need to know. However, if some of your data is on an Oracle database, for example, configuring a linked server brings special challenges. You need to understand that even if you configure an Oracle linked server in SQL Server Enterprise Manager, your SQL Server is a client of your Oracle database. Therefore, you must successfully install and configure Oracle client software on your SQL Server. Oracle provides product support only for Oracle. Oracle. 8 or later. The Oracle Net. 8 library provides the client software that SQL Server needs. In Oracle, a schema is the name for the entity SQL Server professionals know as a database. Specifies the tables, views, derived tables, and joined tables used in DELETE, SELECT, and UPDATE statements in SQL Server 2017. In the SELECT statement, the FROM. To connect to Oracle, you need to supply the schema name, password, and host string. An Oracle schema is owned by a specific Oracle username, so the schema name is also the username of the user who owns the schema. One Oracle username owns only one schema. You can find out more about the contents of a schema by querying the Oracle data dictionary, as I describe in the sidebar System Procedures for Obtaining Linked Server Metadata, page 2. The Oracle host string is also known as a service name or System Identifier SID. What SQL Server calls an instance, Oracle calls a database. During an Oracle server installation, Oracle Universal Installer a graphical interface similar to SQL Servers installation program asks for a SID to use as the name of the Oracle database. If you install your Oracle instance on a Windows machine and set your SID to Ora. Windows 2. 00. 0 service called Oracle. Service. ORA8. 17. This service is analogous to the MSSQLSERVER service for SQL Server 2. For information about the architectural differences between the two products, see the Microsoft article Migrating Oracle Databases to Microsoft SQL Server 7. Setting Up the Oracle Client on SQL Server A SQL Server instance and its client exchange data through the application level Tabular Data Stream TDS protocol by using a supported network protocol such as TCPIP or IPXSPX. Oracle servers and clients use Net. Transparent Network Substrate TNS, an Oracle protocol adapter, and a supported network library. Net. 8 uses a protocol adapter for translations between TNS and the network library. Net. 8, a replacement for SQLNet, uses service names to find servers. The network libraries Net. TCPIP, SPX, Named Pipes, Logical Unit Type 6. LU6. 2, and Bequeath. TCPIP and SPX are the network libraries you can use to connect remote clients to Oracle servers. You use LU6. 2 for compatibility with the IBM Advanced Program to Program Communications APPC architecture. Net. 8 uses the Bequeath network protocol for making connections when an Oracle client is logged in locally to the Oracle server. For a Net. 8 client to make a successful connection to an Oracle server, the client must be able to find the service name for the server. Oracle clients can resolve service names by using a local client file called tnsnames. Windows HOSTS file, the DNS, or an Oracle Names Server. With Oracle. 9i, Lightweight Directory Access Protocol LDAP becomes another service name resolution option. However, at press time, Microsoft didnt officially support Oracle. The Java based Oracle Universal Installer helps you install Oracle server and client software on both Windows and UNIX systems. On a Windows system, inserting the Oracle installation CD ROM autostarts Oracle Universal Installer. I recommend selecting a default installation of the Oracle. Net. 8, the default installs the Net. Assistant, the Net. Configuration Assistant, and SQLlus and adds these options to your Start menu. SQLlus is a client tool comparable to SQL Servers osql. Troubleshooting Using SQL Server to validate a linked server connection to Oracle can give misleading results. Until you execute a linked server query, you cant be certain whether you configured the link correctly. Keep in mind that you can issue a linked server query indirectly. In Enterprise Manager, if you select Tables or Views under your linked server definition, youre indirectly querying the Oracle data dictionary. After I issued such a query, I received the error message in Figure 1. But when I executed Oracles TNSPING command similar to a TCPIP PING, but specifically for testing connectivity to an Oracle database from a command prompt, the results showed that Oracle client and networking components were installed, as Figure 2 shows. Additionally, I had successfully used both the Net. Assistant, as Figure 3 shows, and the Net. Configuration Assistant to make actual connections to the example SCOTT schema, which is analogous to the SQL Server Pubs database. Using either of those network administration tools is sufficient for validating a database connection, so I knew that the problem lay elsewhere. When youre creating linked servers to non Microsoft databases, check the PATH environment variable. Note that Oracle incorrectly appears before SQL Server in the PATH variable that Figure 4 shows. To prevent the error message I received, edit PATH as Figure 5 shows, placing SQL Server ahead of any other vendor youre linking to. After I corrected PATH, the linked queries worked correctly. Configuring SQL Server Creating a linked Oracle server on SQL Server 2. You must manually add a key to the client machines registry. In this case, your SQL Server is the client of the Oracle server. You need to choose the registry keys for the appropriate version of Windows and your Oracle server. You can find the appropriate registry files, which begin with mtx, in the C program filescommon filessystemole db folder. Double click the appropriate registry file to add the necessary key. For more information, see BOL go to Accessing and Changing Relational Data, Distributed Queries, OLE DB Providers Tested with SQL Server, OLE DB Provider for Oracle, then look under Registry Entries. You create linked servers by executing a series of two system stored procedures. To begin, you use spaddlinkedserver to specify your choice of OLE DB provider. The following example specifies Microsoft Data Access for Oracle spaddlinkedserver Ora. DB, Oracle, MSDAORA, Ora. Or you can specify Oracles OLE DB provider spaddlinkedserver Ora. DB, Oracle, Ora. OLEDB. Oracle, Ora. You must pick one or the other of these options. Although Microsoft officially supports and recommends only the Microsoft OLE DB Provider for Oracle, this provider has limitations that I show later in an INSERT example. If you experience problems when youre using Microsofts provider, try using Oracles provider before calling Microsoft technical support. The next step is to use spaddlinkedsrvlogin to create a login to the linked server. SQL Server is like any other Oracle client in that it must supply a username and password to connect to the Oracle server. You can provide the username and password to spaddlinkedsrvlogin in several different ways. In the first example that follows, I had already created a SQL Server login of sys with a password of changeoninstall to let SQL Server impersonate an Oracle username and password by supplying a SQL Server username and password to Oracle. By default, the Oracle user sys has a password of changeoninstall. Because the usernames and passwords for the two database servers match, the SQL Server credentials can impersonate the Oracle credentials. No mapping of SQL Server credentials is required in this case, so I used true as the value of the second parameter, indicating that impersonation of credentials will take place. In the second example, the Win. Data management using microsoft sql server highlighted by Aptech. Garden. Data management using microsoft sql server highlighted Published on Feb 2.