简单介绍Oracle 9i的16种数据类型
Oracle 9i共提供了16种标量数据类型，如下所示。 Oracle 9i的标量数据类型 名称含义 Char 用于描述定长的字符型数据，长度=2000字节 varchar2 用于描述变长的字符型数据，长度=4000字节 nchar 用来存储Unicode字符集的定长字符型数据，长度=1000字节 nvarcha
Oracle 9i共提供了16种标量数据类型，如下所示。
Oracle 9i的标量数据类型 名称含义
Char 用于描述定长的字符型数据，长度
varchar2 用于描述变长的字符型数据，长度
nchar 用来存储Unicode字符集的定长字符型数据，长度
nvarchar2 用来存储Unicode字符集的变长字符型数据，长度
number 用来存储整型或者浮点型数值
Date 用来存储日期数据
Long 用来存储最大长度为2GB的变长字符数据
Raw 用来存储非结构化数据的变长字符数据，长度
Long raw 用来存储非结构化数据的变长字符数据，长度
rowid 用来存储表中列的物理地址的二进制数据，占用固定的10个字节
Blob 用来存储多达4GB的非结构化的二进制数据
Clob 用来存储多达4GB的字符数据
nclob 用来存储多达4GB的Unicode字符数据
Bfile 用来把非结构化的二进制数据存储在数据库以外的操作系统文件中
urowid 用来存储表示任何类型列地址的二进制数据
float 用来存储浮点数
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How long will Oracle database logs be kept?
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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.
How much memory does oracle require?
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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 database server hardware configuration requirements
May 10, 2024 am 04:00 AM
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.
AI startups collectively switched jobs to OpenAI, and the security team regrouped after Ilya left!
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Last week, amid the internal wave of resignations and external criticism, OpenAI was plagued by internal and external troubles: - The infringement of the widow sister sparked global heated discussions - Employees signing "overlord clauses" were exposed one after another - Netizens listed Ultraman's "seven deadly sins" Rumors refuting: According to leaked information and documents obtained by Vox, OpenAI’s senior leadership, including Altman, was well aware of these equity recovery provisions and signed off on them. In addition, there is a serious and urgent issue facing OpenAI - AI safety. The recent departures of five security-related employees, including two of its most prominent employees, and the dissolution of the "Super Alignment" team have once again put OpenAI's security issues in the spotlight. Fortune magazine reported that OpenA
How much memory is needed to use oracle database
May 10, 2024 am 03:42 AM
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 scheduled tasks execute the creation step once a day
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To create a scheduled task in Oracle that executes once a day, you need to perform the following three steps: Create a job. Add a subjob to the job and set its schedule expression to "INTERVAL 1 DAY". Enable the job.
70B model generates 1,000 tokens in seconds, code rewriting surpasses GPT-4o, from the Cursor team, a code artifact invested by OpenAI
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70B model, 1000 tokens can be generated in seconds, which translates into nearly 4000 characters! The researchers fine-tuned Llama3 and introduced an acceleration algorithm. Compared with the native version, the speed is 13 times faster! Not only is it fast, its performance on code rewriting tasks even surpasses GPT-4o. This achievement comes from anysphere, the team behind the popular AI programming artifact Cursor, and OpenAI also participated in the investment. You must know that on Groq, a well-known fast inference acceleration framework, the inference speed of 70BLlama3 is only more than 300 tokens per second. With the speed of Cursor, it can be said that it achieves near-instant complete code file editing. Some people call it a good guy, if you put Curs
Detailed introduction of Samsung S24ai functions
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2024 is the first year of AI mobile phones. More and more mobile phones integrate multiple AI functions. Empowered by AI smart technology, our mobile phones can be used more efficiently and conveniently. Recently, the Galaxy S24 series released at the beginning of the year has once again improved its generative AI experience. Let’s take a look at the detailed function introduction below. 1. Generative AI deeply empowers Samsung Galaxy S24 series, which is empowered by Galaxy AI and brings many intelligent applications. These functions are deeply integrated with Samsung One UI6.1, allowing users to have a convenient intelligent experience at any time, significantly improving the performance of mobile phones. Efficiency and convenience of use. The instant search function pioneered by the Galaxy S24 series is one of the highlights. Users only need to press and hold
