oracle job不运行 解决方案
1) Instance in RESTRICTED SESSIONS mode?
Check if the instance is in restricted sessions mode:
select instance_name,logins from v$instance;
If logins=RESTRICTED, then:
alter system disable restricted session;
^-- Checked!
2) JOB_QUEUE_PROCESSES=0
Make sure that job_queue_processes is > 0
show parameter job_queue_processes
^-- Checked!
3) _SYSTEM_TRIG_ENABLED=FALSE
Check if _system_enabled_trigger=false
col parameter format a25
col value format a15
select a.ksppinm parameter,b.ksppstvl value from x$ksppi a,x$ksppcv b
Where a.indx=b.indx and ksppinm=’_system_trig_enabled’;
^-- Checked!
4) Is the job BROKEN?
select job,broken from dba_jobs where job=;
If broken, then check the alert log and trace files to diagnose the issue.
^-- Checked! The job is not broken.
相关文档：
我们先来看一下他们的定义：
A schema is a collection of database objects (used by a user.).
Schema objects are the logical structures that directly refer to the database’s data.
A user is a name defined in the database that can connect to and access objects.
Schemas and users help database ......
1. 创建 Sequence
使用如下命令新建sequence(用户需要有CREATE SEQUENCE 或者CREATE ANY SEQUENCE权限):
CREATE SEQUENCE test_sequence
INCREMENT BY 1 -- 每次加的个数据
START WITH 1 -- 从1开始计数
NOMAXVALUE& ......
请问下,我删除表的某些数据,如何把它闪回来呀? 20分钟内不过对该表由插入了些数据
根据scn号来查询
select a, b, c, versions_xid, versions_starttime, versions_endtime,
versions_startscn,versions_endscn,versions_operation
from test versions between scn 339493 and 339635
根据时间也可以
from te ......
1.查看所有用户：
select * from dba_users;
select * from all_users;
select * from user_users;
2.查看用户或角色系统权限(直接赋值给用户或角色的系统权限)：
select * from dba_sys_privs;
select * from user_sys_privs;
3.查看角色(只能查看登陆用户拥有的角色)所包含的� ......
今天有个功能需要对CLOB字段进行操作，期间遇到几个问题，老天眷顾，都算是解决了，记一下，免得日后重蹈覆辙。
错误一：
ORA-22920: 未锁定含有 LOB 值的行
出现这个问题的原因，是由于select出LOB字段时未加 for update，ORACLE官方文档对该错误的说明：
引用文字代码
ORA-22920 ro ......
