使用下面的命令就可以了：
db2cmd

然后：
db2set db2codepage=1252

后面的数字是安装DB2时数据库的CodePage。

DB2 CODEPAGE --代码页查询列表
http://www.itdata.cn/bbs/dispbbs.asp?boardid=6&id=928
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Conversion between any of the following codepages is provided.

37 (=x0025) EBCDIC US English
273 (=x0111) EBCDIC German
277 (=x0115) EBCDIC Danish/Norwegian
278 (=x0116) EBCDIC Finnish/Swedish
280 (=x0118) EBCDIC Italian
284 (=x011C) EBCDIC Spanish
285 (=x011D) EBCDIC UK English
297 (=x0129) EBCDIC French
300 (=x012C) EBCDIC Japanese DBCS
301 (=x012D) Japanese PC DBCS
420 (=x01A4) EBCDIC Arabic
424 (=x01A8) EBCDIC Arabic
437 (=x01B5) PC-ASCII US
500 (=x01F4) EBCDIC International
803 (=x0323) Hebrew Set A
813 (=x032D) ISO8859-7 Greek
819 (=x0333) ISO8859-1 Western European
833 (=x0341) IBM-833: Korean
834 (=x0342) IBM-834: Korean Host DBCS
835 (=x0343) EBCDIC Traditional Chinese DBCS
836 (=x0344) EBCDIC Simplified Chinese SBCS
838 (=x0346) EBCDIC Thai SBCS
850 (=x0352) ISO8859-1 Western European
852 (=x0354) PC-ASCII Eastern European
855 (=x0357) PC-ASCII Cyrillic
856 (=x0358) PC-ASCII Hebrew
857 (=x0359) PC-ASCII Turkish
858 (=x035A) PC-ASCII Western European with Euro
860 (=x035C) PC-ASCII Portuguese
861 (=x035D) PC-ASCII Icelandic
862 (=x035E) PC-ASCII Hebrew
863 (=x035F) PC-ASCII Canadian French
864 (=x0360) PC-ASCII Arabic
865 (=x0361) PC-ASCII Scandinavian
866 (=x0362) PC-ASCII Cyrillic #2
868 (=x0364) PC-ASCII Urdu
869 (=x0365) PC-ASCII Greek
870 (=x0366) EBCDIC Eastern Europe
871 (=x0367) EBCDIC Icelandic
872 (=x0368) PC-ASCII Cyrillic with Euro
874 (=x036A) PC-ASCII Thai SBCS
875 (=x036B) EBCDIC Greek
880 (=x0370) EBCDIC Cyrillic
891 (=x037B) IBM-891: Korean
897 (=x0381) PC-ASCII Japan Data SBCS
903 (=x0387) PC Simplified Chinese SBCS
904 (=x0388) PC Traditional Chinese Data - SBCS
912 (=x0390) ISO8859-2 Eastern European
915 (=x0393) ISO8859-5 Cyrillic
916 (=x0394) ISO8859-8 Hebrew
918 (=x0396) EBCDIC Urdu
920 (=x0398) ISO8859-9 Turkish
921 (=x0399) ISO Baltic
922 (=x039A) ISO Estonian
923 (=x039B) ISO8859-15 Western Europe with euro (Latin 9)
924 (=x039C) EBCDIC Western Europe with euro
927 (=x039F) PC Traditional Chinese DBCS
928 (=x03A0) PC Simplified Chinese DBCS
930 (=x03A2) EBCDIC Japanese Katakana/Kanji mixed
932 (=x03A4) Japanese OS/2
933 (=x03A5) EBCDIC Korean Mixed
935 (=x03A7) EBCDIC Simplified Chinese Mixed
937 (=x03A9) EBCDIC Traditional Chinese Mixed
939 (=x03AB) EBCDIC Japanese Latin/Kanji mixed
941 (=x03AD) Japanese PC DBCS - for open systems
942 (=x03AE) Japanese PC Data Mixed - extended SBCS
943 (=x03AF) Japanese PC Mixed - for open systems
944 (=x03BO) Korean PC data Mixed - extended SBCS
946 (=x03B2) Simplified Chinese PC data Mixed - extended SBCS
947 (=x03B3) PC Traditional Chinese DBCS
948 (=x03B4) PC Traditional Chinese Mixed - extended SBCS
949 (=x03B5) PC Korean Mixed - KS code
950 (=x03B6) PC Traditional Chinese Mixed - big5
951 (=x03B7) PC Korean DBCS - KS code
970 (=x03CA) euc Korean
1004 (=x03EC) PC Data Latin1
1006 (=x03EE) ISO Urdu
1008 (=x03F0) ASCII Arabic 8-bit ISO
1025 (=x0401) EBCDIC Cyrillic
1026 (=x0402) EBCDIC Turkish
1027 (=x0403) EBCDIC Japanese Latin
1040 (=x0410) IBM-1040: Korean
1041 (=x0411) Japanese PC - extended SBCS
1042 (=x0412) PC Simplified Chinese - extended SBCS
1043 (=x0413) PC Traditional Chinese - extended SBCS
1046 (=x0416) PC-ASCII Arabic
1047 (=x0417) IBM-1047: Western European
1051 (=x041B) ASCII roman8 for HP Western European
1088 (=x0440) PC Korean SBCS - KS code
1089 (=x0441) ISO8859-6 Arabic
1097 (=x0449) EBCDIC Farsi
1098 (=x044A) PC-ASCII Farsi
1112 (=x0458) EBCDIC Baltic (Latvian/Lithuanian)
1114 (=x045A) PC Traditional Chinese - big 5 SBCS
1115 (=x045B) PC Simplified Chinese SBCS
1122 (=x0462) EBCDIC Estonian
1123 (=x0463) EBCDIC Ukrainian
1124 (=x0464) UNIX-ASCII Ukrainian
1131 (=x046B) PC-ASCII Belarus
1140 (=x0474) EBCDIC USA, with euro (like 037)
1141 (=x0475) EBCDIC Austria, Germany, with euro (like 273)
1142 (=x0476) EBCDIC Denmark, Norway, with euro (like 277)
1143 (=x0477) EBCDIC Finland, Sweden, with euro (like 278)
1144 (=x0478) EBCDIC Italy, with euro (like 280)
1145 (=x0479) EBCDIC Spain, with euro (like 284)
1146 (=x047A) EBCDIC UK, with euro (like 285)
1147 (=x047B) EBCDIC France, with euro (like 297)
1148 (=x047C) EBCDIC International, with euro (like 500)
1149 (=x047D) EBCDIC Iceland, with euro (like 871)
1200 (=x04B0) Unicode - UCS-2
1208 (=x04B8) Unicode - UTF-8
1250 (=x04E2) Windows - Eastern European
1251 (=x04E3) Windows - Cyrillic
1252 (=x04E4) Windows - Western European
1253 (=x04E5) Windows - Greek
1254 (=x04E6) Windows - Turkish
1255 (=x04E7) Windows - Hebrew
1256 (=x04E8) Windows - Arabic
1257 (=x04E9) Windows - Baltic Rim
1275 (=x04FB) Apple - Western European
1280 (=x0500) Apple - Greek
1281 (=x0501) Apple - Turkish
1282 (=x0502) Apple - Eastern European
1283 (=x0503) Apple - Cyrillic
1284 (=x0504) IBM-504: Eastern European
1285 (=x0505) IBM-505: Eastern European
1363 (=x0553) Windows Korean PC Mixed including 11,172 full hangul
1364 (=x0554) Korean Host Mixed extended including 11,172 full hangul
1380 (=x0564) PC Simplified Chinese DBCS
1381 (=x0565) PC Simplified Chinese Mixed
1383 (=x0567) euc Simplified Chinese Mixed
1386 (=x056A) PC Simplified Chinese Data GBK Mixed
1388 (=x056C) DBCS Host Simplified Chinese Data GBK Mixed
5346 (=x14E2) Windows-Eastern European with Euro (like 1250)
5347 (=x14E3) Windows - Cyrillic with Euro (like 1251)
5348 (=x14E4) Windows-Western European with Euro (like 1252)
5349 (=x14E5) Windows-Windows - Greek with Euro (like 1253)
5350 (=x14E6) Windows - Turkish with Euro (like 1254)
5351 (=x14E7) Windows - Hebrew with Euro (like 1255)
5352 (=x14E8) Windows - Arabic with Euro (like 1256)
5353 (=x14E9) Windows - Baltic Rim with Euro (like 1257)
5354 (=x14EA) 'Windows - Vietnamese with Euro (like 1258)