Basic table compression 高 最小 DSS Advanced row compression 高 最小 OLTP, DSS Warehouse compression (Hybrid Columnar Compression) 更高 更高 DSS 压缩级别和CPU开销取决于指定的压缩级别(LOW或HIGH)。 Archive compression (Hybrid Columnar Compression) 最高 最高 归档 压缩级别和CPU开销取决于指定的压缩...
2、业务沟通，是否存在均匀分布的字段值，按照字段值分批导出，例如：USERID=' / as sysdba'directory= DMPCONTENT=DATA_ONLYCOMPRESSION=DATA_ONLYdumpfile=export.dmplogfile=export.logtables=owner.table_nameQUERY="WHERE column_name > 100000 3、不满足以上的都可以使用本文rowid方式进行导出：Cat exp_owner_tab...
dumpfile=export.dmp logfile=export.log tables=owner.table_name QUERY="WHERE column_name > 100000 1. 2. 3. 4. 5. 6. 7. 8. 3、不满足以上的都可以使用本文rowid方式进行导出: Cat exp_owner_table_seq.par USERID='/ as sysdba' directory= DMP CONTENT=DATA_ONLY COMPRESSION=DATA_ONLY dumpfil...
logfile=export.log tables=owner.table_name QUERY="WHERE column_name > 100000 3、不满足以上的都可以使用本文rowid方式进行导出: Cat exp_owner_table_seq.par USERID='/ as sysdba' directory= DMP CONTENT=DATA_ONLY COMPRESSION=DATA_ONLY dumpfile=export.dmp logfile=export.log tables=owner.table_name ...
3、不满足以上的都可以使用本文rowid方式进行导出: Cat exp_owner_table_seq.par USERID='/ as sysdba' directory= DMP CONTENT=DATA_ONLY COMPRESSION=DATA_ONLY dumpfile=export.dmp logfile=export.log tables=owner.table_name QUERY="wheremod(dbms_rowid.rowid_block_number(rowid),10)=1"...
Table created. SQL>declare a varchar2(2000) :=''; beginforxin1..10000loopselectobject_name into afromtest.test1whereid=x; end loop; end;/PL/SQL procedure successfully completed. 自动索引的周期默认是15分钟,15分钟之后我们查看是否创建成功 ...
Starting"SYS"."SYS_EXPORT_SCHEMA_01":"/*** AS SYSDBA"directory=DUMPDIRLOGFILE=JIEKE_CSS.log dumpfile=JIEKE_CSS-2021-0722.dmpSCHEMAS=JIEKE_CSSCOMPRESSION=ALLProcessing object typeSCHEMA_EXPORT/TABLE/TABLE_DATAProcessing object typeSCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICSProcessing object t...
COLUMNparameter_nameFORMATA40COLUMNparameter_valueFORMATA15SELECTcon_id,parameter_name,parameter_valueFROMcdb_auto_index_configORDERBY1,2;CON_IDPARAMETER_NAMEPARAMETER_VALUE---1AUTO_INDEX_COMPRESSIONOFF1AUTO_INDEX_DEFAULT_TABLESPACE1AUTO_INDEX_MODEOFF1AUTO_INDEX_REPORT_RETENTION311AUTO_INDEX_RETENTION_FOR...
Table Compression 表压缩 The database can usetable compressionto reduce the amount of storage required for the table. 数据库可以使用表压缩来消除数据块中的重复值。 Compression saves disk space, reduces memory use in thedatabase buffer cache, and in some cases speeds query execution. Table compress...
Using the Oracle Compression Advisor (DBMS_COMPRESSION) to determine the compressed size and compression ratio of the LINEORDER table in memory Note: When you set the comptype input parameter to any of the MEMCOMPRESS types the blkcnt_cmp output parameter value is always set to 0 as there ...