column owner format a16 column object_name format a36 column start_day format a11 column block_increase format 9999999999 select obj.owner, obj.object_name, to_char(sn.BEGIN_INTERVAL_TIME,'RRRR-MON-DD') start_day, sum(a.db_block_changes_delta) block_increase from dba_hist_seg_stat a, ...
drop tablespace tablespace_name; alter database datafile '/xxx/xxx/undotbs_datafile_name1.dbf' offline drop 注意,应该先创建好回滚段表空间,并使之生效,然后才能再删除现有回滚段表空间1.1.2.4. 表空间大小查看:set linesize 300 set pagesize 999 SELECT a.tablespace_name, ROUND (a.total_size) "...
INITIAL2097152NEXT1048576MINEXTENTS1MAXEXTENTS2147483645POTINCREASE0FREELISTS1FREELIST GROUPS1BUFFER POOLDEFAULTFLASH CACHEDEFAULTCELL_FLASH_CACHEDEFAULT) TABLESPACE "MY_TABLESPACE";ALTERTABLE"TBLTEMP"ADDCONSTRAINT"TBL_TEMP_PK"PRIMARYKEY("UUID") USINGINDEX"TBL_TEMP_PK" ENABLE; COMMENTONCOLUMN"TBLTEMP" "U...
In a full synchronization for the table structure, the length of the char and varchar2 types in the source database automatically increases by at least 1.5 times by byte in the destination database (because the length of the destination database is in the unit of byte). The increase multipl...
The file size limitations of the underlying operating system limit the amount of data in a BFILE. XMLType As part of its support for XML, Oracle9i introduced a datatype called XMLType. A column defined as this type of data will store an XML document in a character LOB column. There are...
(2) More Child Cursors(SGA) - It is recommended that some consideration be taken to increase the sizeof the shared_pool on upgrade from 10g to 11g, given the extra cursors that maybe required to accommodate this feature. (3)More Work to Match theCursor (CPU) - More Child Cursors and ...
SET PAGESIZE – The number of lines per page. The header line will be there on every page. SET COLSEP – Setting the column separator. SET LINESIZE – The number of characters per line. The default is 80. You can set this to a value in a way that the entire record comes within a...
ORA-24816:LOB write operation failed, possible reasons include exceeding the maximum size of LOB data, insufficient memory, or incorrect LOB handling in the application code. Common Causes Exceeding the maximum size of a LOB column during an insert or update operation. ...
If we attempt to create a unique index on both the ID and NAME columns while making the ID column only the PK, Oracle is going to complain: SQL> alter table small add primary key(id) using index (create unique index small_uk_i on small(id, name)); alter table small add primary ...
To increase the performance of database import operations, thettGridAdmin dbImportcommand now enables you to use multiple threads to import database objects with the use of the-numThreadsoption. This release allows you to set a timeout (in milliseconds) for channel create requests to a remote...