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- What is oracle database used for?
- Oracle Database is a relational database management system used in a wide range of applications, including transaction processing systems, data warehousing, and data mining. Its main advantages include: reliability, scalability, high performance, security, ease of management and support for multiple platforms.
- Oracle 1126 2024-05-10 04:15:26
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- How much memory does oracle require?
- The amount of memory required by Oracle depends on database size, activity level, and required performance level: for storing data buffers, index buffers, executing SQL statements, and managing the data dictionary cache. The exact amount is affected by database size, activity level, and required performance level. Best practices include setting the appropriate SGA size, sizing SGA components, using AMM, and monitoring memory usage.
- Oracle 743 2024-05-10 04:12:15
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- How big is the oracle database?
- Oracle database size depends on data volume, table structure, indexes, and temporary space. Influencing factors include: Data volume: The largest factor affecting database size. Table structure: Tables with complex structures will be larger. Indexes: Indexes can significantly increase database size. Temporary tables and temporary space: storing temporary data will also increase the size.
- Oracle 1341 2024-05-10 04:09:17
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- How much data can an oracle database store?
- The storage capacity of Oracle database depends on factors such as hardware limitations, disk space, memory, data block size, table space, indexes, data types, compression, etc. Generally speaking, large enterprise databases can store terabytes or even petabytes of data, while small business or personal databases may only have a few hundred gigabytes or less of data.
- Oracle 1063 2024-05-10 04:06:17
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- What does an oracle database server consist of?
- Oracle Database Server consists of seven main components: 1. Instance (manages connections and data processing); 2. Database (stores actual data); 3. SGA (caches data and code, improves performance); 4. PGA (stores user sessions) information); 5. Background process (performs critical tasks); 6. Network service (handles connection and authentication); 7. Operating system (provides underlying resource management).
- Oracle 747 2024-05-10 04:03:17
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- Oracle database server hardware configuration requirements
- Oracle database server hardware configuration requirements: Processor: multi-core, with a main frequency of at least 2.5 GHz. For large databases, 32 cores or more are recommended. Memory: At least 8GB for small databases, 16-64GB for medium sizes, up to 512GB or more for large databases or heavy workloads. Storage: SSD or NVMe disks, RAID arrays for redundancy and performance. Network: High-speed network (10GbE or higher), dedicated network card, low-latency network. Others: Stable power supply, redundant components, compatible operating system and software, heat dissipation and cooling system.
- Oracle 942 2024-05-10 04:00:28
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- How many connections does oracle database support?
- The number of Oracle Database connections is affected by version, hardware, application, and workload. According to official guidelines, each 5GB of RAM can support approximately 50 (simple applications), 25 (moderate complexity), or 10 (very complex) connections. Actual connection capacity may vary and requires performance testing to determine.
- Oracle 617 2024-05-10 03:54:17
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- What are the data types supported by Oracle database?
- Oracle database provides diverse data types, including: numeric types: INTEGER, FLOAT, DOUBLE PRECISION, NUMBER, DEC text types: CHAR, VARCHAR2, CLOB, NCLOB date and time types: DATE, TIME, TIMESTAMP, INTERVAL Boolean type: BOOLEAN Binary types: BLOB, BFILE
- Oracle 1275 2024-05-10 03:51:17
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- Does oracle database support sql language?
- Yes, Oracle Database supports the SQL language. The applications of SQL in Oracle database include: 1. Data query; 2. Data update; 3. Data management; 4. Database management; 5. Data operation.
- Oracle 1288 2024-05-10 03:45:24
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- How much memory is needed to use oracle database
- The amount of memory required for an Oracle database depends on the database size, workload type, and number of concurrent users. General recommendations: Small databases: 16-32 GB, Medium databases: 32-64 GB, Large databases: 64 GB or more. Other factors to consider include database version, memory optimization options, virtualization, and best practices (monitor memory usage, adjust allocations).
- Oracle 814 2024-05-10 03:42:18
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- What is the hardware environment for Oracle installation?
- Hardware environment requirements for Oracle database installation include: Certified server: with sufficient processing power, memory, and redundant components. Multi-core CPU: High clock speed and multiple cores. Sufficient memory: meets workload needs. High-performance storage: SSD or hybrid storage array (RAID configuration). Stable network: acceptable bandwidth and latency. Compatible operating systems: Windows, Linux or UNIX, matching database version. Certified virtualization platform (optional): Follow Oracle best practices.
- Oracle 1286 2024-05-10 03:39:18
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- What services need to be started in oracle database
- The startup services required to start the Oracle database include: Oracle TNS Listener (for connection request routing) Oracle Database Service (for managing database instances) Oracle Server Manager (for internal process management) Oracle Log Writer Process (for write rewrite) Make log files) Oracle Checkpoint Process (for writing data files) Oracle Process Monitor (for monitoring and restarting processes) Oracle Lock Manager (for managing locks and latches
- Oracle 589 2024-05-10 03:36:16
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- Do Oracle database need to configure environment variables?
- Yes, using Oracle database requires configuring the following environment variables: ORACLE_HOME: The path to the Oracle software installation directory. PATH: The path containing the path to the Oracle executable file. LD_LIBRARY_PATH (Linux/Unix only): Path containing paths to Oracle shared libraries.
- Oracle 1299 2024-05-10 03:33:15
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- To start the oracle database, which service must be started?
- Required services required to start an Oracle database: Oracle Database Listener Service: It listens for client connection requests and routes them to the database instance. How to start the Oracle Database Listener Service: Windows: Find and start the "OracleXXXListener" service in the Services Control Panel. Linux/Unix: Use the "lsnrctl start" command to start the listener service.
- Oracle 1383 2024-05-10 03:30:21
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- How long will Oracle database logs be kept?
- The retention period of Oracle database logs depends on the log type and configuration, including: Redo logs: determined by the maximum size configured with the "LOG_ARCHIVE_DEST" parameter. Archived redo logs: Determined by the maximum size configured by the "DB_RECOVERY_FILE_DEST_SIZE" parameter. Online redo logs: not archived, lost when the database is restarted, and the retention period is consistent with the instance running time. Audit log: Configured by the "AUDIT_TRAIL" parameter, retained for 30 days by default.
- Oracle 980 2024-05-10 03:27:19
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