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- How to restore database in oracle
- There are three ways to recover an Oracle database: Using the RMAN utility: connect to the target database, perform a recovery operation, and then open the database. Use Flashback technology: Check the logs, determine the point in time, initiate a Flashback rollback, and open the database. Use Data Recovery Advisor: Launch the tool, select repair options, and follow the instructions in the wizard.
- Oracle 1010 2024-04-19 03:30:27
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- How to roll back in oracle
- The rollback operation in Oracle can undo the changes in uncommitted transactions and restore the database to the state before the transaction started. There are two methods of rollback: explicitly rolling back the current transaction using the ROLLBACK statement, or automatically rolling back the transaction when an error occurs through exception handling. Rollback can only undo changes in an uncommitted transaction, and the best practice is to use exception handling to handle errors in the transaction to ensure that the transaction is rolled back correctly when an error occurs.
- Oracle 572 2024-04-19 03:27:17
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- How to create oracle database scheduled tasks
- Methods for creating scheduled tasks in Oracle database: DBMS_SCHEDULER package: create jobs and programs, associate programs with jobs, and schedule jobs. Job Scheduler: Create and manage scheduled tasks using a graphical interface. DBMS_JOB package: Create a job, specify the program to run, and schedule the job.
- Oracle 1234 2024-04-19 03:24:16
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- How to change oracle database password
- To change your Oracle database password, follow these steps: Connect to the database and log in using your current password. Use the ALTER USER statement to change the password, and then commit the changes. Close the database connection.
- Oracle 1522 2024-04-19 03:18:13
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- How to use oracle database
- Oracle Database is a powerful RDBMS that offers scalability, reliability, and security. After connecting to the database, you can create databases, tables, insert data, query data, update data, and delete data. In addition, Oracle Database provides advanced features such as transactions, constraints, indexes, triggers, and stored procedures.
- Oracle 533 2024-04-19 03:12:18
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- How to check which tables are used by Oracle stored procedure
- Answer: Tables used by stored procedures can be viewed in Oracle. Steps: Find the stored procedure definition. Extract stored procedure text. Parses the stored procedure text for table names in the FROM or JOIN clause.
- Oracle 1264 2024-04-19 03:09:12
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- How to view stored procedures in oracle database
- You can view the stored procedures in the Oracle database through the following steps: 1. Connect to the database; 2. Get the list of stored procedures; 3. View the stored procedure code; 4. View the stored procedure documentation.
- Oracle 1083 2024-04-19 03:03:22
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- How to query stored procedures in oracle
- There are three ways to query Oracle stored procedures: (1) Use SELECT to query the all_procedures table; (2) Use the GET_PROCEDURES function of the DBMS_METADATA package; (3) Use the all_dependencies table to query the dependencies of a stored procedure.
- Oracle 1324 2024-04-19 03:00:30
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- How to view oracle database content
- There are several ways to view the contents of an Oracle database: SQL Developer: A graphical tool for querying, browsing, and managing database contents. SQL Plus: Command line tool for executing SQL commands. Toad: Commercial tool for viewing, managing, and developing databases. SQL queries: You can use SQL queries such as select, where, group by, and order by to view specific data.
- Oracle 1465 2024-04-19 02:57:18
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- How to back up Oracle database
- How to back up a database using Oracle? Oracle provides several backup options through RMAN and SQL commands: Backup type: Cold backup (database is in OFFLINE state) Hot backup (database is in ARCHIVELOG mode) Incremental backup (only the parts that have changed since the last backup are backed up) Backup method: Use RMAN (Automated Backup and Recovery Tool) Using SQL Commands (Manual Backup) To restore a backup: Use RMAN or SQL commands.
- Oracle 849 2024-04-19 02:54:20
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- What are the methods for authorizing users in Oracle database? How to implement it?
- User permissions can be granted in Oracle database through the following methods: 1. Direct authorization; 2. Role authorization; 3. Default role; 4. System permissions.
- Oracle 909 2024-04-19 02:42:48
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- How to manually execute oracle scheduled tasks immediately
- By using the DBMS_JOB.RUN procedure, Oracle scheduled tasks can be executed immediately without waiting for their scheduled time to run. The steps include: Find the job name of the task. Run the DBMS_JOB.RUN command using the job name. Verify that the task was executed successfully.
- Oracle 1365 2024-04-19 02:39:16
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- What is the default port of oracle
- Oracle's default port is 1521, other ports include: 1522 (Oracle Net Listener), 8080 (APEX), 1158 (Database Vault), and 2483 (TDE). To change the default port, edit the LISTENER.ORA file, change the port number from 1521 to the preferred port, and restart the listener.
- Oracle 783 2024-04-19 02:33:22
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- What are the methods of oracle database data backup?
- Oracle database data backup can be achieved through the following methods: Physical backup: full cold, incremental cold, archive log Logical backup: export/import, RMAN backup/restore Block-based backup: backup set, block change tracking
- Oracle 536 2024-04-19 02:30:23
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- What is the Oracle backup database command?
- Oracle database backup commands include: RMAN: a comprehensive backup and recovery tool that can be used to back up, archive and restore databases and verify backups; Export/Import: used to move specific database parts to other locations; other commands: such as CREATE CONTROLFILE COPY, ALTER DATABASE ARCHIVELOG BACKUP and FLASHBACK DATABASE, for specific purposes.
- Oracle 1218 2024-04-19 02:27:14
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