理论上ORACLE序列，除了START值外任何参数都可以修改 当然最常用的就是先减去xx，然后增加 ALTER SEQUENCE SEQ INCREMENT -500;SELECT SEQ.NEXTVAL FROM DUAL; --会得到0 ALTER SEQUENCE SEQ INCREMENT BY 1 还是DB2劲，可以直接修改 ALTER SEQUENCE SEQ RESTART WITH 5 ...
SYSTEM@xxxxxx> ALTER SEQUENCE Seq1 RESTART; Sequence altered. SYSTEM@xxxxxx> SELECT Seq1.nextval FROM dual; NEXTVAL --- 1 --//现在回到1的位置.还可以这样执行: SYSTEM@xxxxxx> ALTER SEQUENCE Seq1 RESTART START WITH 1500; Sequence altered. SYSTEM@xxxxxx> SELECT Seq1.nextval FROM dual; NEXTV...
除了setval函数,还有另一种方法也是修改sequence的start_value,也是会更新序列的当前值: 项目部署上去需要插入一些基础数据,所以新增数据的ID不是从1开始,修改sequence的start_value (下次执行nextval得到的是start_value,而不是start_value+1) 。 1 altersequences_seq restartwith2 相当于 1 selectsetval('s_seq',...
SELECT sequence_name.CURRVAL FROM dual; CURRVAL函数返回当前的Sequence值,这个值可以在查询语句中使用。 在某些情况下,可能需要重置Sequence的值。可以使用以下ALTER SEQUENCE语句来实现: ALTER SEQUENCE sequence_name [INCREMENT BY increment_value] [RESTART [WITH initial_value]]; 通过INCREMENT BY子句,我们可以更...
通过ALTER SEQUENCE语法,用户可以改变序列对象的起始值、递增量、最小值、最大值、循环属性和缓存值等属性。 二、ALTER SEQUENCE语法详解 1.修改序列的起始值 用户可以使用ALTER SEQUENCE语句来修改序列对象的起始值。语法如下: ALTER SEQUENCE sequence_name INCREMENT BY new_start_value; 其中sequence_name是要修改的...
SQL> SHUTDOWN IMMEDIATE; SQL> STARTUP MOUNT; SQL> ALTER DATABASE ARCHIVELOG; SQL> ALTER DATABASE OPEN; SQL> ALTER SYSTEM SWITCH LOGFILE; Create a table to test the backup and restore operations: Bash 复制 SQL> create user scott identified by tiger quota 100M on u...
Start up the instance and mount, but do not open the database. SQL> startup mount; Enable databaseARCHIVELOGmode. SQL> alter database archivelog; Shut down and restart the database instance. SQL> shutdown SQL> startup Verify the database is now inARCHIVELOGmode. ...
Use the following AUDIT SQL statements: – AUDIT ALTER PROFILE BY ACCESS; – AUDIT ALTER USER BY ACCESS; – AUDIT AUDIT SYSTEM BY ACCESS; – AUDIT CREATE PUBLIC DATABASE LINK BY ACCESS; – AUDIT CREATE SESSION BY ACCESS; Introducing Oracle Audit Vault for Auditors 1-5 Starting the Oracle ...
Starting with 11 is purely cosmetic - it allows new ORL groups to be added later while keeping their group# in the same sequence as the existing ORLs. Copy Copied to Clipboard Error: Could not Copy alter database add standby logfile group 11 '/u02/oradata/db1/stby-t01-g11-m1.log' ...
startup restrict pfile = '<Full path to init.ora file>'; 3. Drop the rollback/undo segment, e.g.: drop rollback segment "_SYSSMU21"; 4. Shutdown the instance, and remove the init.ora parameters added in point 1 and restart the instance, e.g.: ...