dump导出的时候报这个错，请问怎么解决：
SELECT
C.CONSTRAINT_NAME AS CONSTRAINT_NAME,
S.COLUMN_NAME AS COLUMN_NAME,
K.ORDINAL_POSITION AS ORDINAL_POSITION,
S.COLLATION AS COLLATION,
S.SUB_PART AS SUB_PART,
S.INDEX_COMMENT AS INDEX_COMMENT
FROM information_schema.TABLE_CONSTRAINTS C,
information_schema.KEY_COLUMN_USAGE AS K,
information_schema.STATISTICS AS S
WHERE C.TABLE_SCHEMA=K.TABLE_SCHEMA AND C.TABLE_NAME=K.TABLE_NAME AND
C.TABLE_SCHEMA=S.TABLE_SCHEMA AND C.TABLE_NAME=S.TABLE_NAME AND
C.CONSTRAINT_SCHEMA=K.CONSTRAINT_SCHEMA AND C.CONSTRAINT_NAME=K.CONSTRAINT_NAME AND
C.CONSTRAINT_NAME=S.INDEX_NAME AND K.ORDINAL_POSITION=S.SEQ_IN_INDEX AND
C.TABLE_SCHEMA=? AND C.TABLE_NAME=? AND C.CONSTRAINT_TYPE=?
C.TABLE_SCHEMA=S.TABLE_SCHEMA AND C.TABLE_NAME=S.TABLE_NAME AND
C.CONSTRAINT_SCHEMA=K.CONSTRAINT_SCHEMA AND C.CONSTRAINT_NAME=K.CONSTRAINT_NAME AND
C.CONSTRAINT_NAME=S.INDEX_NAME AND K.ORDINAL_POSITION=S.SEQ_IN_INDEX AND
C.TABLE_SCHEMA=? AND C.TABLE_NAME=? AND C.CONSTRAINT_TYPE=?
ORDER BY K.ORDINAL_POSITION ASC java.sql.SQLTransientConnectionException: (conn=21350) No memory or reach tenant memory limit
at com.oceanbase.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:128) ~[oceanbase-client-2.4.5.jar:?]
at com.oceanbase.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:202) ~[oceanbase-client-2.4.5.jar:?]
at com.oceanbase.jdbc.OceanBaseStatement.executeExceptionEpilogue(OceanBaseStatement.java:317) ~[oceanbase-client-2.4.5.jar:?]
at com.oceanbase.jdbc.JDBC4ServerPreparedStatement.executeInternal(JDBC4ServerPreparedStatement.java:1014) ~[oceanbase-client-2.4.5.jar:?]
at com.oceanbase.jdbc.JDBC4ServerPreparedStatement.execute(JDBC4ServerPreparedStatement.java:972) ~[oceanbase-client-2.4.5.jar:?]
at com.oceanbase.jdbc.JDBC4ServerPreparedStatement.executeQuery(JDBC4ServerPreparedStatement.java:918) ~[oceanbase-client-2.4.5.jar:?]
at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:213) ~[druid-1.2.18.jar:?]
at com.oceanbase.tools.loaddump.jdbc.JdbcExecutor.queryMap(JdbcExecutor.java:138) ~[ob-loader-dumper-4.2.6-RELEASE.jar:?]
at com.oceanbase.tools.loaddump.jdbc.JdbcTemplate.queryMap(JdbcTemplate.java:149) ~[ob-loader-dumper-4.2.6-RELEASE.jar:?]
at com.oceanbase.tools.loaddump.schema.accessor.ObMySqlMetadataAccessor.queryUniqueMapping(ObMySqlMetadataAccessor.java:1033) ~[ob-loader-dumper-4.2.6-RELEASE.jar:?