KomachiSion commented on issue #2138: Could not commit JPA transaction when I use save to insert data to oracledatabase URL: https://github.com/apache/incubator-shardingsphere/issues/2138#issuecomment-483092248 > Howerver, there are three problem. > 1、It costs a long time to connect to the database. (version 3.0.0.M2~3.1.0) > It takes an average of 1 hour. ShardingSphere will get table metadata when start by JDBC method `getTables(String catalog, String schemaPattern, String tableNamePattern, String types[])`. But for oracle, the catalog is no effect. So ShardingSphere get whole tableName in oracle (just like #1933). If there are too many tables, it will cost much time. > Which version solves this problem? 4.x？ see #1933 and #1951
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