Create fastingest.sql

added fastingest.sql script

Author: uschwinn

data-platform/core-converged-db/fast-ingest-lookup/files/fastingest.sql

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+set feedback on
+set echo on
+-- use 23ai environment
+
+-- in container ROOT as privileged user
+-- configure memoptimize_write_area_size
+alter system set memoptimize_write_area_size=300M scope=spfile;
+
+-- restart the database
+startup force 
+
+-- check parameters
+show parameter memoptimize
+
+-- connect to the pdb
+-- change session parameter
+
+alter session set container=&pdb;
+pause
+
+-- change memoptimize_writes parameter 
+alter session set memoptimize_writes=on;
+
+drop table sh.sales_write_tab;
+
+-- create table with memoptimize for write attribute
+create table sh.sales_write_tab (
+sales_id      NUMBER(6) primary key,
+prod_id       NUMBER(6) not null,
+cust_id       NUMBER not null,
+time_id       DATE not null,
+quantity_sold NUMBER(3) not null,
+amount_sold   NUMBER(10,2) not null)
+segment creation immediate
+memoptimize for write;
+
+pause
+-- display information about fast ingest data in the large pool
+select * from v$memoptimize_write_area;
+
+-- insert data and select
+insert into sh.sales_write_tab
+(sales_id, prod_id, cust_id, time_id, quantity_sold, amount_sold)
+ select rownum, PROD_ID, CUST_ID, TIME_ID, QUANTITY_SOLD, AMOUNT_SOLD from sh.sales;
+
+-- not all data is flushed yet
+select count(*) from  sh.sales_write_tab;
+
+-- display information about fast ingest data in the large pool
+select * from v$memoptimize_write_area;
+
+pause
+-- flush all the fast ingest data from the large pool to disk
+exec dbms_memoptimize.write_end;
+
+pause
+-- display information about fast ingest data in the large pool
+select * from v$memoptimize_write_area;
+
+-- finally all data is flushed
+select count(*) from sh.sales_write_tab;
+
+pause
+-- demonstrate Lob usage
+drop table sh.test_sf;
+
+create table sh.test_sf (
+id       number primary key,
+test_col CLOB)
+segment creation immediate
+LOB (test_col) STORE AS SECUREFILE(
+tablespace USERS
+ENABLE STORAGE IN ROW
+NOCOMPRESS
+CACHE)
+memoptimize for write;
+
+pause
+
+column table_name format a30
+-- query all_tables 
+select table_name, memoptimize_read memread, memoptimize_write memwrite  
+from all_tables where owner='SH';