[OpenSER-Users] ERROR:mysql:db_mysql_convert_row: no private memory

Hi, why could this error occur? It has ocurred me now several times but never seen it before ¿?

Feb 4 15:31:31 [27228] ERROR:mysql:db_mysql_convert_row: no private memory left Feb 4 15:31:31 [27228] ERROR:mysql:db_mysql_convert_rows: error while converting row #1 Feb 4 15:31:31 [27228] ERROR:mysql:db_mysql_convert_result: error while converting rows Feb 4 15:31:31 [27228] ERROR:mysql:db_mysql_store_result: error while converting result Feb 4 15:31:31 [27228] ERROR:core:db_do_raw_query: error while storing resultFeb 4 15:31:31 [27228] ERROR:usrloc:get_all_db_ucontacts: raw_query failed

I will investigate it but any comment will be welcome. Thanks.