昨天看到一个同事在通过PL/SQL Developer工具把文本数据往oracle表;有两个文本;一个有30万条记录;一个7万多条记录。在导入到过程中;出现错误记录还需要点击确认。不过使用黑科技(屏幕精灵)自动点击。单一个7万多记录的文本需要10分钟左右的时间。 看到这种情况;我热心
For more information, see Table and Row Size in Memory-Optimized Tables. Bytes in source text of a stored procedure Lesser of batch size or 250 MB Bytes per varchar(max), varbinary(max), xml, text, or image column 2^31-1 Characters per ntext or nvarchar(max) column 2^30-1 ...
This changed in Oracle Database 12c with the introduction ofextended data types. This increased the maximum size of avarchar2to 32,767 bytes. Critically, if you're using the character set AL32UTF8 for your database (the default from 12.2), each character could consume up to 4 bytes of ...
Footnote 1When specifying the maximum size of a value of this data type in PL/SQL, use an integer literal (not a constant or variable) whose value is in the range from 1 through 32,767. Footnote 2Supported only for backward compatibility with existing applications....
日期类型的长度是7;字符类型就是字段定义时候的长度;数字类型是22(数字类型的长度=精度/2+1),如果是负数,那么长度要再加1;如果是函数索引,那就要按照函数索引的返回值来进行计算。 为什么ONLINE创建只能使用不到BLOCK SIZE一半的空间? ORACLE的管理手册中指明了索引的大小不能大于BLOCK_SIZE的一半,然后这一半的空间...
Collectively, the utilization of Oracle High Availability Features and implementation utilizing Oracle Maximum Availability Architecture best practices as enabled FNF to meet service level agreements at the lowest cost. The project was initiated in March 2006, and the system was completed and moved into...
Oracle Automatic Storage Management Automatic Storage Management (ASM) provides a vertically integrated file system and volume manager directly in the Oracle kernel, resulting in: • Significantly less work to provision database storage • Higher levels of availability • Elimination of the expense,...
Bytes per index key2 900 900 Bytes per foreign key 900 900 Bytes per primary key 900 900 Bytes per row8 8,060 8,060 Bytes in source text of a stored procedure Lesser of batch size or 250 MB Lesser of batch size or 250 MB Bytes per varchar(max), varbinary(max), xml, text, or ...
【YashanDB知识库】通过dblink查询Oracle数据时报YAS-07301异常2024-12-2541.【YashanDB知识库】使用leading hint调整SQL执行计划后报错YAS-04522 invalid hint leading2024-12-2542.【YashanDB知识库】通过触发器复制varchar(4000 char)列的数据导致乱码2024-12-2543.【YashanDB知识库】由于druid中间件配置导致的YAS-...
如Oracle Hyperion Planning 使用者手冊所述,使用者可將儲存格文字值和備註新增至資料表單儲存格。依預設,每個儲存格中文字允許的單位元字元長度上限為 255,備註的上限為 1,500。 註: 在資料庫中,根據預設,欄資料類型設成 varchar(255) 和 varchar(2,000)。