Good Day,

Today I restored database from 32-bit Linux machine to 64-bit. after opening database , there were a lot of errors like that:

ORA-06544: PL/SQL: internal error, arguments: [56327], [], [], [], [], [], [], []
ORA-06553: PLS-801: internal error [56327].

Solution of this problem is recompiles existing PL/SQL modules in the format required by the new database.

Step by step:

SQL> shutdown immediate;
SQL> startup upgrade;
SQL> @$ORACLE_HOME/rdbms/admin/utlirp;
SQL> shutdown immediate;
SQL> startup;
SQL> @@$ORACLE_HOME/rdbms/admin/utlrp;