最近好多用户对Oracle的分区表很感兴趣，也希望分区表也能应用的ArcSDE，询问该技术在ArcSDE是否可行，答案是肯定的。 不过因为在Oracle中分区表的对象基本上就是一个同名表，但是在ArcSDE中就有些不同了，因为如果进行版本编辑有A表、D表等，所以建议如果对
最近好多用户对Oracle的分区表很感兴趣，也希望分区表也能应用的ArcSDE，询问该技术在ArcSDE是否可行，答案是肯定的。
不过因为在Oracle中分区表的对象基本上就是一个同名表，但是在ArcSDE中就有些不同了，因为如果进行版本编辑有A表、D表等，所以建议如果对ArcSDE的某个要素类进行分区表的存储，建议该要素类为只读状态，也就是说修改的可能性小一点，这样做分区表才更有意义，而且分区表的存储一般针对某个表，可能这个表有千万或者上亿条记录，而且经常对这个表进行读操作，那么我们就可以根据某个字段将这些表进行分段存储。具体分区表的分段方式我就不介绍了。
怎么分区，按照什么分区，这就看用户在业务上怎么对这个表进行应用了。
1：没有任何的章法可循，没有固定条件查询，可以按照ObjectID进行分区
2：有些用户对日期感兴趣，对日期字段进行分区
3：有些用户对行政区感兴趣，对行政区编码进行分区
4：有些用户对地类感兴趣，可以将地位按一级编码进行分区
...............
所以说，怎么分区，还是按业务进行考虑
那么在ArcSDE中关于存储的配置文件在SDEHOME/etc/dbtune.sde里面，用户也可以使用dbtune命令将这些信息导出，然后修改，然后再导入。
##PARTITION A_INDEX_RASTER "PCTFREE 0 INITRANS 4 NOLOGGING " XMLDB_INDEX_TAG "YES" XMLDB_INDEX_FULLTEXT "NO" XML_IDX_TEXT_UPDATE_METHOD "NONE" XML_IDX_TEXT_UPDATE_MEMORY "" XML_IDX_TEXT_TAG_STORAGE "" XML_IDX_STORAGE "PCTFREE 0 INITRANS 4" XML_IDX_INDEX_TEXT "" XML_IDX_INDEX_TAG "PCTFREE 0 INITRANS 4 NOLOGGING " XML_IDX_INDEX_STRING "PCTFREE 0 INITRANS 4 NOLOGGING " XML_IDX_INDEX_PK "PCTFREE 0 INITRANS 4 NOLOGGING " XML_IDX_INDEX_ID "PCTFREE 0 INITRANS 4 NOLOGGING " XML_IDX_INDEX_DOUBLE "PCTFREE 0 INITRANS 4 NOLOGGING " XML_DOC_VAL_LOB_STORAGE "NOCACHE NOLOGGING CHUNK 4K PCTVERSION 5 DISABLE STORAGE IN ROW" XML_DOC_UNCOMPRESSED_TYPE "CLOB" XML_DOC_STORAGE "PCTFREE 0 INITRANS 4" XML_DOC_MODE "COMPRESSED" XML_DOC_LOB_STORAGE "NOCACHE NOLOGGING CHUNK 4K PCTVERSION 5 DISABLE STORAGE IN ROW" XML_DOC_INDEX "PCTFREE 0 INITRANS 4 NOLOGGING " XML_COLUMN_STORAGE "SDE_XML" UI_TEXT "User Interface text for DEFAULTS" ST_GEOM_LOB_STORAGE " STORE AS ( ENABLE STORAGE IN ROW CHUNK 8K RETENTION CACHE) " S_STORAGE "PCTFREE 0 INITRANS 4" S_INDEX_ALL "PCTFREE 0 INITRANS 4 NOLOGGING " RASTER_STORAGE "BLOB" RAS_STORAGE "PCTFREE 0 INITRANS 4" RAS_INDEX_ID "PCTFREE 0 INITRANS 4 NOLOGGING " GEOMETRY_STORAGE "ST_GEOMETRY" D_STORAGE "PCTFREE 0 INITRANS 4" D_INDEX_STATE_ROWID "PCTFREE 0 INITRANS 4 NOLOGGING " D_INDEX_DELETED_AT "PCTFREE 0 INITRANS 4 NOLOGGING " BND_STORAGE "PCTFREE 0 INITRANS 4" BND_INDEX_ID "PCTFREE 0 INITRANS 4 NOLOGGING " BND_INDEX_COMPOSITE "PCTFREE 0 INITRANS 4 NOLOGGING " BLK_STORAGE "PCTFREE 0 INITRANS 4 LOB(BLOCK_DATA) STORE AS ( ENABLE STORAGE IN ROW CHUNK 8K RETENTION CACHE) " BLK_INDEX_COMPOSITE "PCTFREE 0 INITRANS 4 NOLOGGING " B_STORAGE "PCTFREE 0 INITRANS 4 PARTITION BY RANGE (OBJECTID) ( PARTITION CUS_PART1 VALUES LESS THAN (50000) TABLESPACE ESRI, PARTITION CUS_PART2 VALUES LESS THAN (100000) TABLESPACE ESRI2 ) " B_INDEX_XML "PCTFREE 0 INITRANS 4 NOLOGGING " B_INDEX_USER "PCTFREE 0 INITRANS 4 NOLOGGING " B_INDEX_TO_DATE "PCTFREE 0 INITRANS 4 NOLOGGING " B_INDEX_ROWID "PCTFREE 0 INITRANS 4 NOLOGGING " B_INDEX_RASTER "PCTFREE 0 INITRANS 4 NOLOGGING " AUX_STORAGE "PCTFREE 0 INITRANS 4" AUX_INDEX_COMPOSITE "PCTFREE 0 INITRANS 4 NOLOGGING " ATTRIBUTE_BINARY "BLOB" A_STORAGE "PCTFREE 0 INITRANS 4" A_INDEX_XML "PCTFREE 0 INITRANS 4 NOLOGGING " A_INDEX_USER "PCTFREE 0 INITRANS 4 NOLOGGING " A_INDEX_STATEID "PCTFREE 0 INITRANS 4 NOLOGGING " A_INDEX_SHAPE "PCTFREE 0 INITRANS 4 NOLOGGING " A_INDEX_ROWID "PCTFREE 0 INITRANS 4 NOLOGGING " END
"PCTFREE 0 INITRANS 4 PARTITION BY RANGE (OBJECTID) ( PARTITION CUS_PART1 VALUES LESS THAN (50000) TABLESPACE ESRI, PARTITION CUS_PART2 VALUES LESS THAN (100000) TABLESPACE ESRI2 ) "
然后我将最上面的信息加载到从sdedbtune导出来的文档中，然后导入
C:\Users\Administrator>sdedbtune -o import -f c:\1.txt -i sde:oracle11g:orcl -s lish -u sde -p sde -q
Import DBTUNE Table. Are you sure? (Y/N): y
Successfully imported from file "c:\1.txt"导入之后我们进行一下验证
SQL> select table_name,partition_name,tablespace_name from user_tab_partitions; TABLE_NAME PARTITION_NAME TABLESPACE_NAME ------------------------------ ------------------------------ ---------------------- BIN$SVcacMx9QjSugD7de5WsPw==$0 CUS_PART2 SDE BIN$SVcacMx9QjSugD7de5WsPw==$0 CUS_PART1 ESRI BIN$WZM7+2pGTTKIYNXmkOSLzw==$0 CUS_PART1 ESRI BIN$WZM7+2pGTTKIYNXmkOSLzw==$0 CUS_PART2 SDE BIN$x6yBgW00SgyGPOTa1odkbQ==$0 CUS_PART1 ESRI BIN$x6yBgW00SgyGPOTa1odkbQ==$0 CUS_PART2 SDE CCC CUS_PART2 ESRI2 CCC CUS_PART1 ESRI 已选择8行。
SQL> select objectid,rowid from ccc where objectid=1 or objectid=33333 or objectid=49999 or objectid =50001 or objectid=88888 or objectid=66666;
OBJECTID ROWID
---------- ------------------
1 AAASe0AAHAAAFiFAAA
33333 AAASe0AAHAAAF87AAJ
49999 AAASe0AAHAAAGLbAAQ
50001 AAASe1AAIAAAACFAAB
66666 AAASe1AAIAAAAQWAAK
88888 AAASe1AAIAAAAgMAAU
已选择6行。
