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or describe select * from schema.table_name 如何快速清除一個(gè)大表? alter table table_name activate not logged initally with empty table or import from null_file of del replace into table_name 如何查看數(shù)據(jù)庫(kù)的包? select * from syscat.packages 如何查看數(shù)據(jù)庫(kù)的存儲(chǔ)過(guò)程? select procname,text,* from syscat.procedures Or select procname,text from sysibm.sysprocedures 如何查看數(shù)據(jù)庫(kù)SAMPLE的配置文件的內(nèi)容? get database configuration for sample or get db cfg for sample 如何將數(shù)據(jù)庫(kù)SAMPLE的參數(shù)設(shè)置為默認(rèn)數(shù)值? reset database configuration for sample or reset db cfg for sample 如何修改數(shù)據(jù)庫(kù)SAMPLE配置參數(shù)數(shù)值? update database configuration for sample using or update db cfg for sample using 如何重新啟動(dòng)數(shù)據(jù)庫(kù)? Restart db db_name 如何激活數(shù)據(jù)庫(kù)? Activate db db_name 如何停止數(shù)據(jù)庫(kù)? Deactivate db db_name 如何重命名表? Rename old_tablename to new_tablename 如何設(shè)置DB2環(huán)境變量 Db2set命令,語(yǔ)法如下: Db2set variant=value 如何除去quiesce狀態(tài) 1. 連接到數(shù)據(jù)庫(kù) 2. 用 list tablespaces 判斷哪個(gè)tablespace處于quiesce狀態(tài)和和取得對(duì)象(object)ID 3. 判斷對(duì)象ID對(duì)應(yīng)的表 a)用 db2 "select tabname from syscat.tables where tablid=對(duì)象ID" 得到表名 b)用 db2 list history 判斷是那個(gè)表 4. 用 db2 quiesce tablespaces for table 表名 reset 去除quiesce狀態(tài) |
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來(lái)自: WindySky > 《基礎(chǔ)知識(shí)》