.::: Insert data table to another table with different Database in Oracle Database :::.

 

A. Without Date

1. Check

select * from pembelian;
 

2. table after create
CREATE TABLE pembelian_clone (
    KODE_PEMBELIAN     CHAR(10) NOT NULL,
    KODE_BARANG        CHAR(6) NOT NULL,
    KODE_CUSTOMER      CHAR(6) NOT NULL,
    TANGGAL_PEMBELIAN  DATE DEFAULT NULL,
    JUMLAH_PEMBELIAN   DECIMAL(4,0) DEFAULT NULL
);
 

.::: Insert data table to another table with different Database in PostgreSQL EDB :::.

 

A. Without Date

1. Check

select * from pembelian;
 

2. table after create
CREATE TABLE pembelian_clone (
    KODE_PEMBELIAN     CHAR(10) NOT NULL,
    KODE_BARANG        CHAR(6) NOT NULL,
    KODE_CUSTOMER      CHAR(6) NOT NULL,
    TANGGAL_PEMBELIAN  DATE DEFAULT NULL,
    JUMLAH_PEMBELIAN   DECIMAL(4,0) DEFAULT NULL
);
 

.::: Insert data table to another table with different Database in MariaDB :::.

 

A. Without Date

1. Check

select * from teguhth.pembelian;
 
2. table after create
CREATE TABLE pembelian_clone (
    KODE_PEMBELIAN CHAR(10) NOT NULL,
    KODE_BARANG CHAR(6) NOT NULL,
    KODE_CUSTOMER CHAR(6) NOT NULL,
    TANGGAL_PEMBELIAN DATE DEFAULT NULL,
    JUMLAH_PEMBELIAN DECIMAL(4,0) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 

.::: Setting up and using the mutt email client in Linux for alert NMS or Other :::.

 

Berikut contoh penggunaan mutt untuk mengirim email dari command line di CentOS 9:

A. Setup

1. update repository

sudo dnf update -y

2. setup mutt

sudo dnf install mutt -y

3. check

mutt -v
 

.::: how to use DBMS_CRYPTO.ENCRYPT dan DBMS_CRYPTO.DECRYPT in Oracle as example table pembelian :::.

 

Oke! Saya akan kasih kamu contoh penggunaan DBMS_CRYPTO.ENCRYPT dan DBMS_CRYPTO.DECRYPT pada tabel pembelian. Di sini, kita akan menyimpan kolom credit_card_number dalam bentuk terenkripsi, dan mendekripsinya saat dibaca.

Studi Kasus: Tabel pembelian_card

1. grant access

GRANT EXECUTE ON DBMS_CRYPTO TO admin;
commit;

2. Buat tabel:

CREATE TABLE pembelian_card (
    id               NUMBER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    nama_pembeli     VARCHAR2(100),
    credit_card_enc  RAW(2000) -- data terenkripsi
);

.::: Backup restore Export import expdp impdp from schema to another schema in oracle using crontab :::.

 

correlation https://teguhth.blogspot.com/2024/12/backup-restore-export-import-expdb.html


1. backup manual

[oracle@teguhth ~]$ expdp aisyah/hanin@localhost:1521/tgh DIRECTORY=DATA_PUMP_DIR DUMPFILE=aisyah_schema.dmp LOGFILE=aisyah_schema.log SCHEMAS=aisyah

Export: Release 19.0.0.0.0 - Production on Tue Apr 22 14:10:38 2025
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Starting "AISYAH"."SYS_EXPORT_SCHEMA_01":  aisyah/********@localhost:1521/tgh DIRECTORY=DATA_PUMP_DIR DUMPFILE=aisyah_schema.dmp LOGFILE=aisyah_schema.log SCHEMAS=aisyah
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
Processing object type SCHEMA_EXPORT/STATISTICS/MARKER
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/TABLE/COMMENT
Processing object type SCHEMA_EXPORT/TABLE/IDENTITY_COLUMN
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/TRIGGER
. . exported "AISYAH"."BARANG"                           6.984 KB       6 rows
. . exported "AISYAH"."CUSTOMER"                         7.554 KB       6 rows
. . exported "AISYAH"."EMPLOYEES"                        6.359 KB       2 rows
. . exported "AISYAH"."EMPLOYEES_CHANGE_LOG"             8.312 KB       5 rows
. . exported "AISYAH"."PASOK"                            7.695 KB      12 rows
. . exported "AISYAH"."PEMBELIAN"                        7.835 KB      15 rows
. . exported "AISYAH"."SUPLIER"                          7.578 KB       6 rows
Master table "AISYAH"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for AISYAH.SYS_EXPORT_SCHEMA_01 is:
  /home/oracle/backup/aisyah_schema.dmp
Job "AISYAH"."SYS_EXPORT_SCHEMA_01" successfully completed at Tue Apr 22 14:11:39 2025 elapsed 0 00:00:58

[oracle@teguhth ~]$
 

.::: Enable Change Data Capture (CDC) Oracle Database using TRIGGER with session_user & client_ip :::.

 

Berikut adalah langkah-langkah untuk mengaktifkan Change Data Capture (CDC) di Oracle menggunakan Trigger, termasuk contoh tabel, isi tabel, dan implementasi trigger untuk melacak perubahan data:

1. Membuat Tabel Sumber
Tabel ini adalah tabel utama tempat data disimpan, dan perubahan pada tabel ini akan dilacak.

CREATE TABLE EMPLOYEES (
    EMP_ID NUMBER PRIMARY KEY,
    EMP_NAME VARCHAR2(50),
    DEPARTMENT_ID NUMBER,
    SALARY NUMBER
);
 

.::: How to enable CDC (Change Data Capture) in SQL Server Using Trigger with client_ip :::.

 

Berikut adalah implementasi Change Data Capture (CDC) menggunakan trigger di SQL Server, termasuk contoh tabel, data awal, serta operasi INSERT, UPDATE, dan DELETE.

correlation  with http://teguhth.blogspot.com/2022/11/how-to-enable-cdc-change-data-capture.html
https://teguhth.blogspot.com/2024/12/how-to-enable-cdc-change-data-capture.html
 
1. Membuat Tabel Utama
Misalkan tabel utama bernama Products:

CREATE TABLE Products (
    ProductID INT IDENTITY PRIMARY KEY,
    ProductName NVARCHAR(100),
    Price DECIMAL(10, 2),
    Stock INT
);

.::: Query Check user session, current, Client IP in MariaDB MySQL, PostgreSQL EDB, MSSQL SQL Server, Oracle :::.

 

1. MariaDB MySQL

select USER();
 

2. PostgreSQL

SELECT session_user, CURRENT_USER || '@' || host(inet_client_addr()) AS user_with_ip;  
SELECT CURRENT_USER || '@' || host(inet_client_addr()) AS user_with_ip;
SELECT COALESCE(host(inet_client_addr()), 'localhost') AS ip_only;
SELECT session_user,CURRENT_USER || '@' || inet_client_addr() AS user_with_ip;

.::: How to enable CDC (Change Data Capture) in PostgreSQL, EDB with user,ip client :::.

 

correlation https://teguhth.blogspot.com/2024/04/how-to-enable-cdc-change-data-capture.html

1. Enable WAL (Write-Ahead Logging): PostgreSQL uses Write-Ahead Logging for durability. Ensure that your PostgreSQL server is configured to use WAL.

2. Create Audit Table: Create an audit table where you will log the changes.

CREATE TABLE audit_table (
    id SERIAL PRIMARY KEY,
    table_name TEXT NOT NULL,
    action_type TEXT NOT NULL,
    old_data JSONB,
    new_data JSONB,
    changed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    performed_by VARCHAR(100),
    ip_client TEXT NOT NULL
);

.::: How to enable CDC (Change Data Capture) in MariaDB, MySQL, MarinaDB in Table with user() information :::.

 

correlation https://teguhth.blogspot.com/2024/03/how-to-enable-cdc-change-data-capture.html


Enable Binary Logging
1. check table for sample

SELECT *,@@hostname,@@version FROM teguhth.pembelian
 
2. Create table for cdc

# create table

CREATE TABLE audit_table (
    id INT AUTO_INCREMENT PRIMARY KEY,
    table_name VARCHAR(100),
    action_type ENUM('INSERT', 'UPDATE', 'DELETE'),
    old_data JSON,
    new_data JSON,
    changed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    performed_by VARCHAR(100)
);

ALTER TABLE audit_table
ADD COLUMN performed_by VARCHAR(100);

SELECT *,@@hostname,@@version FROM audit_table;

.::: Insert data table to another table with different Database in SQL Server :::.

 

  A. Without Date

1. Check

select * from teguhth..pembelian
 

2. create table & insert firstime

-- pertama kali insert table
select * into dwh..pembelian_clone from teguhth..pembelian
 

.::: Shrink Disk VMWare for Linux & Windows Virtual Machine :::.

 A. Shrink Disk Linux Virtual Machine

1. check before shrink
 

2. Shrink via Terminal

dd if=/dev/zero of=zerofile bs=1M