I am using the query bellow to check the usage of tablespaces in my oracle DBs: select t.tablespace_name, t.size_mb, f.free_mb, round((f.free_mb*100)/t.size_mb,2) percent_free from (select tablespace_name, round(sum(bytes)/1024/1024,2) size_mb from dba_data_files group by t...
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1 row in set (0.0006 sec) Connection 2> SELECT GET_LOCK('my_lock_1', -1); -- Connection 1 Connection 1> SELECT GET_LOCK('my_lock_2', -1); ERROR: 3058: Deadlock found when trying to get user-level lock; try rolling back transaction/releasing locks and res...
Oracle表空间对应数据文件位置不规范迁移方法 oracle数据库启动报错ORA-00201:控制文件与ORACLE版本不兼容 oracle数据备份恢复报错ORA-12541: TNS: no listener Oracle数据库中,回滚段的作用是什么? Oracle中tablespace和datafile之间的关系是什么样的? SGA主要有哪些部分,主要作用是什么,如何查询当前SGA各个组件当前大小?
( ut.table_name, ut.tablespace_name, CAST(MULTISET(SELECT utc.column_name FROM user_tab_columns utc WHERE utc.table_name = ut.table_name) AS column_list_tab ) ), sys.xmlgenformatType.createFormat('TABLE') ), sys.xmlgenformatType.createFormat('USER_TABLES') ).getStringVal() AS xml_...
In OceanBase Database V4.2.0 and later V4.x versions, you must have theALTER SYSTEMprivilege to change the value of the variable at the global level in an Oracle user tenant. Session-level operation In thesystenant or a user tenant, you can directly change the value of the variable at...
TABLESPACESlistoftablespacestoexport TRANSPORT_TABLESPACEexporttransportabletablespacemetadata(N) TEMPLATEtemplatenamewhichinvokesiASmodeexport Exportterminatedsuccessfullywithoutwarnings. 我们从EXP工具帮助信息中可以明确看到对其的解释说明，就是在导出表的过程中可以针对表数据的某一个子集进行导出，过滤掉我们不需要的数据...
The PRODUCTION database is copied every night with its UNDO tablespace and renamed to REPORTING for reporting purposes .CauseSign In To view full details, sign in with your My Oracle Support account. Register Don't have a My Oracle Support account? Click to get started!
The plan shows the combination of the steps Oracle Database uses to execute a SQL statement. Each step either retrieves rows of data physically from the database or prepares them for the user issuing the statement. An execution plan displays the cost of the entire plan, indicated on line 0...
create user tc identified by tc default tablespace testcase; grant dba to tc; -- Create directory create or replace directory tc_datapump as '/tmp'; grant read, write on directory tc_datapump to tc; -- Create a test table create table tc.t1 as select * from dba_source; ...