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POCopying metadata over a database link in Oracle 10g
 

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  1. POCopying metadata over a database link in Oracle 10g
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    <p>Thanks in advance for your help experts.</p> <p>I want to be able to copy over database objects from database A into database B with a procedure created on database B.</p> <p>I created a database link between the two and have tweaked the get_ddl function of the dbms_metadata to look like this:</p> <pre><code>create or replace function GetDDL ( p_name in MetaDataPkg.t_string p_type in MetaDataPkg.t_string ) return MetaDataPkg.t_longstring is -- clob v_clob clob; -- array of long strings c_SYSPrefix constant char(4) := 'SYS_'; c_doublequote constant char(1) := '"'; v_longstrings metadatapkg.t_arraylongstring; v_schema metadatapkg.t_string; v_fullength pls_integer := 0; v_offset pls_integer := 0; v_length pls_integer := 0; begin SELECT DISTINCT OWNER INTO v_schema FROM all_objects@ENTORA where object_name = upper(p_name); -- get DDL v_clob := dbms_metadata.get_ddl(p_type, upper(p_name), upper(v_schema)); -- get CLOB length v_fullength := dbms_lob.GetLength(v_clob); for nIndex in 1..ceil(v_fullength / 32767) loop v_offset := v_length + 1; v_length := least(v_fullength - (nIndex - 1) * 32767, 32767); dbms_lob.read(v_clob, v_length, v_offset, v_longstrings(nIndex)); -- Remove table’s owner from DDL string: v_longstrings(nIndex) := replace( v_longstrings(nIndex), c_doublequote || user || c_doublequote || '.', '' ); -- Remove the following from DDL string: -- 1) "new line" characters (chr(10)) -- 2) leading and trailing spaces v_longstrings(nIndex) := ltrim(rtrim(replace(v_longstrings(nIndex), chr(10), ''))); end loop; -- close CLOB if (dbms_lob.isOpen(v_clob) &gt; 0) then dbms_lob.close(v_clob); end if; return v_longstrings(1); end GetDDL; </code></pre> <p>so as to remove the schema prefix that usually comes with metadata. I get a null value whenever I run this function over the database link with the following queries.</p> <p>select getddl( 'TABLE', 'TABLE1') from user_tables@ENTORA where table_name = 'TABLE1';</p> <p>select getddl( 'TABLE', 'TABLE1') from dual@ENTORA;</p> <p>t_string is varchar2(30) t_longstring is varchar2(32767) and type t_ArrayLongString is table of t_longstring</p> <p>I would really appreciate it if any one could help. Many thanks.</p>
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