Sometimes, you would like to grant SELECT on all tables which belong to a schema or user to a different user. Unfortunately, Oracle doesn’t directly support this employing a single SQL statement.

To work around this, you’ll select all table names of a user (or a schema) and grant the SELECT object privilege on each table to a grantee.

The following stored procedure illustrates the idea:

CREATE PROCEDURE grant_select(

username VARCHAR2,

grantee VARCHAR2)

BEGIN

FOR r IN (

SELECT owner, table_name

FROM all_tables

WHERE owner = username

)

LOOP

EXECUTE IMMEDIATE

‘GRANT SELECT ON ‘||r.owner||’.’||r.table_name||’ to ‘ || grantee;

END LOOP;

END;

This example grants the SELECT object privileges of all tables that belong to the user OT to the user DW:

EXEC grant_select(‘OT’,’DW’);

When you use the user DW to login to the Oracle Database, the user DW should have the SELECT object privilege on all tables of the OT‘s schema.

To unlock a user in Oracle, you follow these steps:

First, log in to the Oracle Database as a SYS user.
Then, use ALTER USER statement to unlock the user as follows:

ALTER USER username IDENTIFIED BY password ACCOUNT UNLOCK;

Note that if you unlock an account without resetting the password, then the password remains expired, therefore, the IDENTIFIED BY password clause is important . the primary time the user logs in to the Oracle Database, he must change his password.

Let’s see an example of unlock a user.

Suppose user alice is locked. When alice logs in, she is going to see the subsequent message:

Enter user-name: alice@pdborcl

Enter password:

ERROR:

ORA-28000: the account is locked

To unlock the user alice, you employ these steps:

First, log in to the Oracle Database using theot user:

Enter user-name: ot@orclpdb

Enter password:

Then, use the ALTER USER statement to unlock user alice:

ALTER USER alice IDENTIFIED BY abcd1234 ACCOUNT UNLOCK;

Note that abcd1234 is that the new password that alice will use to log within the Oracle Database.

Now the user alice should be ready to log within the database with the new password.

So, this brings us to the end of blog. This Tecklearn ‘How to Grant SELECT Object Privilege on One or More Tables to a User and Unlock a User in Oracle’ blog helps you with commonly asked questions if you are looking out for a job in Oracle DB. If you wish to learn Oracle DB and build a career in Database domain, then check out our interactive, Oracle 12c DBA Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/oracle-12c-dba-course/

Oracle 12c DBA Course Training

About the Course

Oracle Database Administration training will help you master the Oracle DBA. As part of the training, you will master the Oracle Database architecture, the database processes, memory structures, schema objects, security, data recovery and backup through hands-on projects and case studies. Oracle DBA Training helps students gain the skills and knowledge required to install, configure, and administer Oracle databases. Besides, this training also develops the full skill set required to become a successful Oracle Database Administrator.

Why Should you take Oracle DBA Training?

The Average salary of an Oracle DBA is $108,837 per annum – GlassDoor.com
According to Gartner, Oracle is the market leader in the Relational Database with 48.35% market share globally.
IBM, TCS, Tech Mahindra, Oracle, Wipro & other MNCs worldwide use Pl-SQL for their database deployments.

What you will Learn in this Course?

Introduction to Oracle Database

What is the Oracle Database
Pre-requisites for oracle database
Oracle database 12c installation
Multi-tenant architecture

Exploring the Oracle 12c Database Architecture

Explain the Memory Structures
Describe the Process Structures
Overview of Storage Structures

Preparing the Database Environment

Identify the tools for Administering an Oracle Database
Plan an Oracle Database Installation
Install the Oracle Software by using Oracle Universal Installer (OUI)
Create a Database by using the Database Configuration Assistant (DBCA)

Managing the Oracle Instance

Setting database initialization parameters
Describe the stages of database startup and shutdown

Database Storage Structures and Schema Objects

Managing Database Storage Structures
Overview of table space and data files
Overview of Primary Components
Identify the importance of checkpoints, redo log files, and archived log files
Configure ARHIVELOG mode

Database Startup & User Requests and Oracle Network Environment

Describe the stages of database startup and shutdown
Using alert log and trace files
Configure and Manage the Oracle Network
pFile and spFile
Tablespace Management
Storage and Relationship Structure

Oracle Backup & Recovery

Redo log File Management
Performing Database Recovery
Overview of Data Recovery Advisor
Use Data Recovery Advisor to Perform recovery (Control file, Redo log file and Data file)

Deep Dive into Oracle Recovery Manager (RMAN)

Using the RMAN Recovery Catalog
Identify situations that require RMAN recovery catalog
Create and configure a recovery catalog
Synchronize the recovery catalog
Create and Use RMAN stored scripts
Back up the recovery catalog
Create and use a virtual private catalog

Configuring Backup Specifications

Using RMAN to Create Backups
Create image file backups
Create a whole database backup
Enable fast incremental backup
Using RMAN to Perform Recovery
Perform complete recovery from a critical or noncritical data file loss using RMAN
Perform incomplete recovery using RMAN

Data Movement and Oracle Data Pump

Moving Data
Describe and use methods to use move data (Directory objects, SQL* Loader, External tables)
Explain the general architecture of Oracle Data Pump

Data Dictionary & Dynamic Performance Tables

Oracle Data Dictionary contains information related to database privileges
Data dictionary views
Media failure
Flashback CDB

Database Tuning

What is database tuning
How to tune the database
Tuning the data dictionary

549