Oracle | JVMRJBC

Oracle JVMRJBC Version 26ai

General Information

Library Note

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Oracle Database 26ai is now availble. If you haven't you downloaded already: Why?

Purpose The source file states: "This package defines the API to java$jvm$rjbc and related routines."

Another source identifies it as: "JVM utility for working with LOBs (initdbj)."

Likely both are correct.

AUTHID DEFINER

Dependencies

BMS_CRYPTO	DBMS_PIPE	JVMRJBCINV
DBMS_LOB	JAVA$JVM$RJBC

Documented No

First Available Not Known

Security Model Owned by SYS with EXECUTE granted to PUBLIC

Source {ORACLE_HOME}/javavm/install/initdbj.sql

Subprograms

DONE	GETPATH	PUTLOB
GETLOB	INIT	PUTPATH

DONE

Closes a session identifier jvmrjbc.done(sessid IN VARCHAR2);

DECLARE

       inVal dbms_id := 

      'ORA$PIPE$00BA74A4000171CBDF0007BA4C499FED03B1D4B239C9F61B9E92AA2F30692AD1B6AFE0FDC2FFF01945';

      BEGIN

        jvmrjbc.done(inVal);

      END;

      /

      

      PL/SQL procedure successfully completed.

GETLOB

Returns the BLOB loaded with PUTLOB jvmrjbc.getLOB(sessid IN VARCHAR2) RETURN BLOB;

DECLARE

       sid    dbms_id := 

      'ORA$PIPE$00BA74A400012BD2510A70A92DFD2F8F623A60BFC19C1A83339E785F3386AE385F27D8F08D3FAAEB00';

       retVal BLOB;

      BEGIN

        retVal := jvmrjbc.getLOB(sid);

        dbms_output.put_line(TO_CHAR(dbms_lob.getLength(retVal)));

      END;

      /

      0

      

      PL/SQL procedure successfully completed.

GETPATH

Returns the path loaded with PUTPATH jvmrjbc.getPath(sessid IN VARCHAR2) RETURN VARCHAR2;

DECLARE

       sid    dbms_id := 

      'ORA$PIPE$00BA74A400012BD2510A70A92DFD2F8F623A60BFC19C1A83339E785F3386AE385F27D8F08D3FAAEB00';

       retVal dbms_id;

      BEGIN

        retVal := jvmrjbc.getPath(sid);

        dbms_output.put_line(retVal);

      END;

      /

      

      PL/SQL procedure successfully completed.

INIT

Initialize a session identifier jvmrjbc.init RETURN VARCHAR2;

DECLARE

       retVal dbms_id;

      BEGIN

        retVal := jvmrjbc.init;

        dbms_output.put_line(retVal);

      END;

      /

      ORA$PIPE$00969B680001572C887EF78338F52BD26CB7487364EEC85603859958A96BD913AB17695919E406D030

      

      PL/SQL procedure successfully completed.

PUTLOB

Loads the BLOB returned by GETLOB jvmrjbc.putLOB( sessid IN VARCHAR2, l IN BLOB);

See PUTPATH Demo Below

PUTPATH

Sets the path returned by GETPATH jvmrjbc.putPath( sessid IN VARCHAR2, pathname IN VARCHAR2);

-- return a list of tables with BLOB columns

      SELECT dtc.table_name, dtc.column_name

      FROM dba_tab_cols dtc, dba_tables dt

      WHERE dtc.owner = 'SYS'

      AND dtc.owner = dt.owner

      AND dtc.table_name = dt.table_name

      AND dt.num_rows > 0

      AND dtc.data_type = 'BLOB'

      ORDER BY 1;

      

      -- find one of the tables with a BLOB column that contains a BLOB for use below

      SELECT dbms_lob.getLength(awlob)

      FROM aw$awcreate

      WHERE dbms_lob.getLength(awlob) > 0;

      

      DECLARE

       sessid dbms_id;

       pname  dbms_id;

       iBlob  BLOB;

       oBlob  BLOB;

      BEGIN

        sessid := jvmrjbc.init;

        dbms_output.put_line('Session ID: ' || sessid);

        jvmrjbc.putPath(sessid, 'c:\temp\');

        pname := jvmrjbc.getPath(sessid);

        dbms_output.put_line('PathName: ' || pname);

      

        SELECT awlob INTO iBlob

        FROM aw$awcreate

        WHERE dbms_lob.getLength(awlob) > 0

        AND rownum = 1;

      

        jvmrjbc.putLob(sessid, iBlob);

        oBlob := jvmrjbc.getLOB(sessid);

        dbms_output.put_line(dbms_lob.getLength(oBlob));

      

        jvmrjbc.done(sessid);

      END;

      /