PLS-00630: pipelined functions must have a supported collection return type

Question

Hello, I created an TYPE of OBJECT and a PLSQL Function as shown below, but the function compilation errors with following. Not sure where is the issue?
PLS-00630: pipelined functions must have a supported collection return typeThis is on Oracle 10g r2
CREATE OR REPLACE TYPE cxs_plsql_profiler_object_type AS OBJECT (
   cxs_object_name      VARCHAR2 (128),
   cxs_object_type      VARCHAR2 (19),
   cxs_object_status    VARCHAR2 (7),
   cxs_read_execution   NUMBER,
   cxs_buffer_gets      NUMBER,
   cxs_disk_reads       NUMBER,
   cxs_executions       NUMBER,
   cxs_sorts            NUMBER,
   cxs_sharable_mem     NUMBER,
   cxs_address          NUMBER,
   cxs_hashvalue        NUMBER,
   cxs_osuser           VARCHAR2 (30),
   cxs_username         VARCHAR2 (30),
   cxs_module           VARCHAR2 (48),
   cxs_machine          VARCHAR2 (64),
   cxs_status           VARCHAR2 (8),
   cxs_terminal         VARCHAR2 (16),
   cxs_percentconsume   NUMBER,
   cxs_percentrepeat    NUMBER,
   cxs_plan             VARCHAR2 (120),
   target_name          VARCHAR2 (200),
   referenced_name      VARCHAR2 (200),
   referenced_type      VARCHAR2 (200),
   targetowner          VARCHAR2 (200),
   refowner             VARCHAR2 (200)
)and here is the API
    FUNCTION CXS_GENERATE_PLSQL_PROFILER
RETURN cxs_plsql_profiler_object_type
PIPELINED IS
out_rec cxs_plsql_profiler_object_type ;
plsbatch plsql_batch;
skount integer;
dpendrec depend_tab;
dkount integer;
CURSOR objects
      IS
         SELECT object_name, object_type
           FROM dba_objects
          WHERE status = 'VALID'
            AND owner NOT IN ('SYS', 'SYSTEM')
            AND object_type IN ('PACKAGE', 'PROCEDURE', 'FUNCTION');
      CURSOR apis (p_object dba_objects.object_name%TYPE)
      IS
         SELECT DISTINCT *
                    FROM (SELECT   SUBSTR (a.sql_text, 1, 50) sql_text,
                                   TRUNC
                                      (  a.disk_reads
                                       / DECODE (a.executions,
                                                 0, 1,
                                                 a.executions
                                      ) reads_per_execution,
                                   a.buffer_gets, a.disk_reads, a.executions,
                                   a.sorts, a.sharable_mem, a.address,
                                   a.hash_value, b.osuser, b.username,
                                   b.module, b.machine, b.status, b.terminal,
                                   ROUND
                                      (cxs_db_info.kompute_percentofsql
                                                               (a.sharable_mem),
                                       5
                                      ) percentkonsume,
                                   cxs_db_info.kount_repeat
                                                         (b.osuser,
                                                          b.terminal
                                                         ) percentr,
                                   c.operation explainplan
                              FROM v$sqlarea a, v$session b, v$sql_plan c
                             WHERE b.sql_hash_value = a.hash_value
                               AND b.sql_address = a.address
                               AND a.hash_value = c.hash_value
                               AND a.address = c.address
                               AND b.status = 'ACTIVE'
                               AND UPPER (a.sql_text) LIKE
                                                        '%' || p_object || '%'
                               AND c.ID = 0
                          ORDER BY 2 DESC)
                   WHERE ROWNUM <= 50;   --profile option
BEGIN
skount := 0;
dkount := 0;
FOR i IN objects
      LOOP
         FOR j IN apis (i.object_name)
         LOOP
            skount := skount + 1;
            plsbatch(skount).cxs_object_name  := i.object_name;
   plsbatch(skount).cxs_object_type      :=  i.object_type;
   plsbatch(skount).cxs_object_status    :=  i.object_status;
   plsbatch(skount).cxs_read_execution   := j.reads_per_execution;
   plsbatch(skount).cxs_buffer_gets      := j.buffer_gets;
   plsbatch(skount).cxs_disk_reads       := j.disk_reads;
   plsbatch(skount).cxs_executions       := j.executions;
   plsbatch(skount).cxs_sorts            := j.sorts;
   plsbatch(skount).cxs_sharable_mem     := j.sharable_mem;
   plsbatch(skount).cxs_address          := j.address;
   plsbatch(skount).cxs_hashvalue        := j.hashvalue;
   plsbatch(skount).cxs_osuser           := j.osuser;
   plsbatch(skount).cxs_username         := j.username;
   plsbatch(skount).cxs_module           := j.module;
   plsbatch(skount).cxs_machine          := j.machine;
   plsbatch(skount).cxs_status           := j.status;
   plsbatch(skount).cxs_terminal         := j.terminal;
   plsbatch(skount).cxs_percentconsume   := j.percentconsume;
   plsbatch(skount).cxs_percentrepeat    := j.percentrepeat;
   plsbatch(skount).cxs_plan             := j.explainplan;
         END LOOP;
         FOR dd IN dpend (i.object_name)
         LOOP
            dkount := dkount + 1;
            dependrec (dkount).target_name := dd.NAME;
            dependrec (dkount).refname := dd.referenced_name;
            dependrec (dkount).reftype := dd.referenced_type;
            dependrec (dkount).target_owner := dd.owner;
            dependrec (dkount).refowner := dd.referenced_owner;
         END LOOP;
      END LOOP;
for a in 1..skount loop
   out_rec.cxs_object_type      := plsbatch(a).object_type;
   out_rec.cxs_object_status    := plsbatch(a).object_status;
   out_rec.cxs_read_execution   := plsbatch(a).reads_per_execution;
   out_rec.cxs_buffer_gets      := plsbatch(a).buffer_gets;
   out_rec.cxs_disk_reads       := plsbatch(a).disk_reads;
   out_rec.cxs_executions       := plsbatch(a).executions;
   out_rec.cxs_sorts            := plsbatch(a).sorts;
   out_rec.cxs_sharable_mem     := plsbatch(a).sharable_mem;
   out_rec.cxs_address          := plsbatch(a).address;
   out_rec.cxs_hashvalue        := plsbatch(a).hashvalue;
   out_rec.cxs_osuser           := plsbatch(a).osuser;
   out_rec.cxs_username         := plsbatch(a).username;
   out_rec.cxs_module           := plsbatch(a).module;
   out_rec.cxs_machine          := plsbatch(a).machine;
   out_rec.cxs_status           := plsbatch(a).status;
   out_rec.cxs_terminal         := plsbatch(a).terminal;
   out_rec.cxs_percentconsume   := plsbatch(a).percentconsume;
   out_rec.cxs_percentrepeat    := plsbatch(a).percentrepeat;
   out_rec.cxs_plan             := plsbatch(a).explainplan;
   PIPE ROW(out_rec);
end loop;
for b in 1..dkount loop
    out_rec.target_name := dd.NAME;
            out_rec.refname := dependrec (b).referenced_name;
            out_rec.reftype := dependrec (b).referenced_type;
            out_rec.target_owner := dependrec (b).owner;
            out_rec.refowner := dependrec (b).referenced_owner;
            PIPE ROW(out_rec);
end loop;
RETURN;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(DBMS_UTILITY.format_error_backtrace);
DBMS_OUTPUT.PUT_LINE(SQLCODE);
DBMS_OUTPUT.PUT_LINE(SQLERRM);
END; and below are tradtional table types that are used in code above.
TYPE type_plsql_rec IS RECORD (
   cxs_object_name      VARCHAR2 (128),
   cxs_object_type      VARCHAR2 (19),
   cxs_object_status    VARCHAR2 (7),
   cxs_read_execution   NUMBER,
   cxs_buffer_gets      NUMBER,
   cxs_disk_reads       NUMBER,
   cxs_executions       NUMBER,
   cxs_sorts            NUMBER,
   cxs_sharable_mem     NUMBER,
   cxs_address          NUMBER,
   cxs_hashvalue        NUMBER,
   cxs_osuser           VARCHAR2 (30),
   cxs_username         VARCHAR2 (30),
   cxs_module           VARCHAR2 (48),
   cxs_machine          VARCHAR2 (64),
   cxs_status           VARCHAR2 (8),
   cxs_terminal         VARCHAR2 (16),
   cxs_percentconsume   NUMBER,
   cxs_percentrepeat    NUMBER,
   cxs_plan             VARCHAR2 (120)
   TYPE plsql_batch IS TABLE OF type_plsql_rec
      INDEX BY BINARY_INTEGER;
       TYPE type_depend_tab IS RECORD (
      target_name    dba_dependencies.NAME%TYPE,
      refname        dba_dependencies.referenced_name%TYPE,
      reftype        dba_dependencies.referenced_type%TYPE,
      target_owner   dba_dependencies.owner%TYPE,
      refowner       dba_dependencies.referenced_owner%TYPE
   TYPE depend_tab IS TABLE OF type_depend_tab
      INDEX BY BINARY_INTEGER;
Thank you for your time in reading this post
R

Answer 1

Thank you Billy and Saubhik,
I have followed your guidelines and was able to resolve this error. Now, after successfully compiling the code, I attempted to execute it in a following way.
SELECT * FROM TABLE (cxs_generate_plsql_profiler);It gives following error: ORA-00904: "CXS_GENERATE_PLSQL_PROFILER": invalid identifier
I also tried putting in quotes like below
SELECT * FROM TABLE ('cxs_generate_plsql_profiler');Then, it gives following error:
ORA-22905: cannot access rows from a non-nested table item
Any Idea where I am doing wrong?
Thanks,
R