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4 lis 2020 · The bulk processing features of PL/SQL are designed specifically to reduce the number of context switches required to communicate from the PL/SQL engine to the SQL engine. Use the BULK COLLECT clause to fetch multiple rows into one or more collections with a single context switch.
- Working With Collections in Pl/Sql
In this article, I will explore another composite data type,...
- LiveSQL
To take advantage of bulk processing for queries, you simply...
- 4.1 Bulk Loading
Bulk loading can import large amounts of data into an Oracle...
- Working With Collections in Pl/Sql
7 lis 2013 · Because the insert into select is the best bulk you can load. The fastest would be to disable the indexes (mark them unusable) and do this in a SINGLE insert: insert /*+ append */ into TARGET select COLS from SOURCE; commit; and rebuild the indexes using UNRECOVERABLE (and maybe even parallel).
20 wrz 2021 · Oracle offers two helpful features in PL/SQL: BULK COLLECT and FORALL. If you’re writing a procedure that loops through results or runs the same statement many times, consider using BULK COLLECT and FORALL to improve the performance of your code.
To take advantage of bulk processing for queries, you simply put BULK COLLECT before the INTO keyword of your fetch operation, and then provide one or more collections after the INTO keyword. Here are some things to know about how BULK COLLECT works:
Bulk binds can improve the performance when loading collections from a queries. The BULK COLLECT INTO construct binds the output of the query to the collection. To test this create the following table. CREATE TABLE bulk_collect_test AS SELECT owner, object_name, object_id FROM all_objects;
Bulk loading can import large amounts of data into an Oracle database. Bulk loading is accomplished with the SQL*Loader utility. (For information about SQL*Loader, see Oracle Database Utilities.)
15 paź 2012 · Load the records in a stage table via SQL*Loader. Then use bulk operations: INSERT INTO SELECT (for example "Bulk Insert into Oracle database") mass UPDATE ("Oracle - Update statement with inner join") or a single MERGE statement
