java -jar squirrel-sql-2.3final-install.jar
* euckr에서 uft8로 변경 방법 mysql>SET character_set_client = utf8; mysql>SET character_set_results = utf8; mysql>SET character_set_connection = utf8; mysql>ALTER DATABASE ems50 DEFAULT CHARACTER SET utf8; commit; 반대로 * uft8에서 euckr로 변경 방법 SET character_set_client = euckr; SET character_set_results = euckr; SET character_set_connection = euckr; ALTER DATABASE EMS51 DEFAULT CHARACTER SET euckr; commit; ..
SQLPLUS> sqlplus /nolog SQLPLUS> conn /as sysdba SQLPLUS> SHUTDOWN IMMEDIATE; SQLPLUS> STARTUP MOUNT; SQLPLUS> ALTER SYSTEM ENABLE RESTRICTED SESSION; SQLPLUS> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0; SQLPLUS> ALTER DATABASE OPEN; SQLPLUS> ALTER DATABASE CHARACTER SET KO16KSC5601; SQLPLUS> ALTER DATABASE NATIONAL CHARACTER SET KO16KSC5601; SQLPLUS> update props$ set value$='KO16KSC5601' where nam..
CREATE TABLESPACE EMS_IDX DATAFILE 'C:/oraclexe/oradata/XE/EMS_IDX.dbf' size 128M DEFAULT STORAGE ( INITIAL 100K NEXT 100K PCTINCREASE 0 MINEXTENTS 1 ); ALTER DATABASE DATAFILE 'C:/oraclexe/oradata/XE/EMS_COMN_IDX01.DBF' RESIZE 128M; ALTER TABLESPACE APLUS_DATA_TS ADD DATAFILE '/data/oradata/data/aplus_data_ts_1.dbf' SIZE 100M AUTOEXTEND OFF; SQL> ALTER DATABASE DATAFILE '/data/oradata/data/aplu..
boolean true / false char 2byte = 16bit 0 ~ 65535 byte 1byte = 8bit -2^7 ~ 2^7 -1 -128 ~ 127 short 2byte = 16bit -2^15 ~ 2^15 -1 -32768 ~ 32767 int 4byte = 32bit -2^31 ~ 2^31 - 1 -2147483648 ~ 2147483647 long 8byte = 64bit -2^63 ~ 2^63-1 -9223372036854775808 ~ 9223372036854775807 float 4byte = 32bit double 8byte = 64bit
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