Steps for Connecting SQL Server and Oracle 1. Creating the mwrep User 2. Creating the Migration Repository 3. Capturing the Microsoft SQL Server Exported Files 4. Checking Conversion Preferences 5. Converting to the Oracle Model 6. Generating and Executing the Script to Create the Oracle Databa...
Querying Data at a Point in Time (Flashback Query)Although some Oracle tools and applications simplify or mask the use of SQL, all database operations are performed using SQL, to take advantage of the security and data integrity features built into Oracle.Overview...
MySQL: Distinguishing It from SQL The acronym “SQL” stands for Structured Query Language, a type of programming language that’s used for manipulating data in a database. MySQL uses the SQL language to manage and query data in databases and, hence, uses the acronym as part of its name....
Oracle - EXCEPTION WHEN NO_DATA_FOUND THEN stmts..; MySQL - DECLARE CONTINUE HANDLER FOR NOT FOUND stmts..; -- Set a variable here like SET not_found =1 Check for the variable, to decide the error condition, when running the query. ...
description => 'Tuning task for an EMP to DEPARTMENT join query.'); DBMS_OUTPUT.put_line('l_sql_tune_task_id: ' || l_sql_tune_task_id); END; / You should see the following: PL/SQL procedure successfully completed. In the preceding command, note the TIME_LIMIT of 60. That limits...
Oracle Database Performance Tuning Understanding ORA-04031 TheORA-04031: unable to allocate bytes of shared memoryerror occurs because more shared memory was needed than was available. The error message will show how much memory was unavailable, the memory pool encountering the error and details about...
How to use SQL parameters with dotConnect for Oracle dotConnect for Oracle enhances SQL handling capabilities with usage of parameters in SQL queries. You can make execution of a query or stored procedure very flexible using several simple techniques. This article describes some basics you must be ...
TheONLYway to get a specific orderisto use anORDER BY. http://stackoverflow.com/questions/20186673/in-oracle-11g-how-to-change-the-order-of-the-results-of-a-sql-without-order-by rowid是标识行的唯一性,格式:data object number(6个字符)+relative file number(3个字符)+block number(6个字符)...
Oracle Database runs a commit before and after DDL. So if the create works, it's saved to your database.You can also create a table based on a select statement. This makes a table with the same columns and rows as the source query. This operation is known as create-table-as-s...
in the database. The statements are working fine in Oracle DB server. However, if I run those sql statement in MySQL DB server, it just simply throw the syntax error. Could you please let me know why these sql statement cannot work on MySQL and how to migrate them from Oracle to ...