My oc4j is error while I operate the mapviewer again, why?

Question

when I zoom out or zoom in the mapviewer client,the map appearance is very slowly, and some layers are not appeared,why.
start the mapviewer for the first,the OC4J are all right,
but after operating to the mapviewer again,
the OC4J tips are following this:
04/03/08 15:11:33 java.sql.SQLException: ORA-29902: error in executing ODCIIndex
Start() routine
ORA-13209: internal error while reading SDO_INDEX_METADATA table
ORA-29400: data cartridge error
ORA-04031: unable to allocate 4036 bytes of shared memory ("large pool","unknown
object","cursor work he","qesaQBInit:buffer")
ORA-06512: at "MDSYS.SDO_INDEX_METHOD_9I", line 232
ORA-06512: at line 1
04/03/08 15:11:33 Message:SQL Exception while querying theme: TRSPPLL
Description: Nested exception is:
java.sql.SQLException: ORA-29902: error in executing ODCIIndexStart() routine
ORA-04031: unable to allocate 16396 bytes of shared memory ("large pool","unknow
n object","koh-kghu sessi","kodpunp:PNTYadt")
ORA-04031: unable to allocate 16396 bytes of shared memory ("large pool","unknow
n object","koh-kghu sessi","pmucalm coll")
thank you very much!

Answer 1

You should check your shared_pool_size and java_pool_size
parameters on the database.
This error occurs when these are not set high enough.
Increase their size and restart the db and try the
mapviewer again.