Using Oracle PL-SQL

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  • ORA-00904 with database link

    I've created a database link between a 9i and 8i database. It works but the same SQL in a PL/SQL block fails with "ORA-00904 : COL4 : identificateur non valide." 

  • When did Oracle begin implicitly closing cursors?

    In your response regarding cursor memory leaks, you said: "It used to be that if you did not close a cursor, that memory stayed allocated and unusable to anything else. This is no longer the case with Oracle." Do you know with what version Oracle sta... 

  • Oracle unveils free SQL Developer: Has Toad met its match?

    Oracle's newly released free SQL Developer could spell trouble for Quest Software Inc.'s popular Toad for Oracle software. 

  • Log execution time for a procedure

    I need to somehow log the execution time for two procedures every time they are called and save that data (in a table?). Do you know of a way to isolate tracing to a specific procedure in order to do this? 

  • Loading data into Oracle

    I need a step-by-step procedure for importing text to an Oracle database using a stored procedure. 

  • Detect if a column is NUMBER or VARCHAR2 in PL/SQL

    How can I tell if a column is a NUMBER or VARCHAR in PL/SQL? Is there a function to do this? 

  • Using PL/SQL for ETL

    How can PL/SQL be best used for the ETL process? 

  • Why doesn't a select statement speed a module run?

    I am using Oracle 9i. I have a PL/SQL module that uses a local procedure for 20% of its time. The procedure consists of a SELECT INTO statement. Rewriting this statement using analytics gives a query plan costing, which is an order of magnitude less ... 

  • Difference between function, procedure and trigger

    What is the difference between a function, a procedure and a trigger? I know the basic differences, but I would like to know the answers based on the performance tuning aspect. 

  • Can I redirect output of an external table to an internal table?

    Can I redirect the output of the bad file and log file of an external table into another internal table in Oracle 10g? Also, can I create a function object on an external table?