1.获得当前用户有权限的表的信息(ALL_TABLES ) (只要对某个表有任何权限,即可在此视图中看到表的相关信息) 表中各字段说明如下: 参考:https://www.iteye.com/blog/appleses-2280054 声明:此博客为个人学习之用,如与其他作品雷同,纯属巧合,转载请指明出处!
To showall tablesin the entire Oracle Database, you query from thedba_tablesview as follows: SELECTtable_nameFROMdba_tables;Code language:SQL (Structured Query Language)(sql) You will get the following error message if you don’t have access to thedba_tablesview: ...
2、 FREELIST(自由列表) Oracle通过维护FREELIST列表来记录或更新所有可用的数据块。当执行INSERT语句时,Oracle首先在FREELIST列表上搜索可用的空闲数据块,搜索成功之后将数据插入到那个空闲块。块在FREELIST列表中的可用性由PCTFREE参数值来决定。起初一个空块在FREELIST列表上列出,并且会一直保留,直到空闲空间达到PCTFR...
create index idx_list_part_nbr on list_part_tab (nbr) local; 收集统计信息: exec dbms_stats.gather_table_stats(ownname => 'LJB',tabname => 'LIST_PART_TAB',estimate_percent => 10,method_opt=> 'for all indexed columns',cascade=>TRUE) ; 该表是否是分区表,分区表的分区类型是什么,是否...
“Earliest” FROM employees WHERE department_id = 30; Emp_list Earliest ——— Raphaely; Khoo; Tobias; Baida; Himuro; Colmenares 07-DEC-02 The following group-set aggregate example lists, for each department ID in the hr.employees table, the employees in that department in order of their...
Listing All Tablespace Quotas Use the DBA_TS_QUOTAS view to list all tablespace quotas specifically assigned to each user. For example: SELECT * FROM DBA_TS_QUOTAS; TABLESPACE USERNAME BYTES MAX_BYTES BLOCKS MAX_BLOCKS --- --- --- --- --- --- USERS JFEE 0 512000 0 250 USERS DCRAN...
OracleTableDataset.type() Returns: the type value. validate public void validate() Validates the instance. Overrides: OracleTableDataset.validate() withAnnotations public OracleTableDataset withAnnotations(List annotations) Set the annotations property: List of tags that can be used for describing th...
AVG_ROW_LEN* NUMBER Average length of a row in the table (in bytes)AVG_SPACE_FREELIST _BLOCKS NUMBER Average freespace of all blocks on a freelist NUM_FREELIST_BLOCKS NUMBER Number of blocks on the freelist DEGREE VARCHAR2(10) Number of threads per in...
在OceanBase 数据库 Oracle 租户下创建 insert all 触发器后对表进行操作,报错 ORA-00904,具体报错信息如下。 ORA-00904: invalid identifier 'VIEW1.:NEW.C1' in 'field list' at CHZ.TRI.BEFORE_ROW 表结构及对应的触发器语句如下。 创建测试表 t1,t2,t3。 create table t1 (c1 int, c2 int); crea...
支持使用ALTER TABLE语句添加CHECK约束、PRIMARY KEY约束、FOREIGN KEY约束以及NOT NULL约束。 分区支持 支持一级分区、模板化和非模板化的二级分区。 支持哈希(Hash)、范围(Range)、列表(List)和组合分区等分区形式。 支持局部索引和全局索引。 对于分区维护支持以下操作: ...