oracle11gr2

问题 I am using Oracle 11g r2 . I have a table that stores images as ORDImage : PHOTOS (phot_id integer , phot_filename varchar2(256) , phot_source ordsys.ordimage) And another temporary table that stores an image uploaded by a user as BLOB . INSERT_TEMP (itemp_id integer, itemp_source blob) I want to move the BLOB image to the PHOTOS table only if does not already exists, by comparing the two images. I need to use SQL/MM Still Image methods as ORDImageSignature methods are deprecated in Oracle

问题 I am using Oracle 11g r2 . I have a table that stores images as ORDImage : PHOTOS (phot_id integer , phot_filename varchar2(256) , phot_source ordsys.ordimage) And another temporary table that stores an image uploaded by a user as BLOB . INSERT_TEMP (itemp_id integer, itemp_source blob) I want to move the BLOB image to the PHOTOS table only if does not already exists, by comparing the two images. I need to use SQL/MM Still Image methods as ORDImageSignature methods are deprecated in Oracle

问题 We have several servers that each run an Oracle database 11g Release 11.2.0.1.0 - 64bit. We are connecting via JDBC like this: public Connection createConnection(String drvClass, String connURL, String user, String pass) throws ClassNotFoundException, SQLException { Class.forName(drvClass); Connection conn = DriverManager.getConnection(connURL, user, pass); for (SQLWarning warn = conn.getWarnings(); warn != null; warn = warn.getNextWarning()) { System.out.println("SQL Warning:"); System.out

问题 I had issues where my installation of Oracle Enterprise Edition 11gR2 corrupted in some way, so I have had to reinstall Oracle fEnterprise Edition 11gR2 from scratch. What I wish to know is .... Is there any way to "re-attach" my Db instances ? i.e I have a folder "DB5" , Which contains the various .CTL, .DBF and a couple of .ORA files. I would like to re create DB5 using these files as I dont have a backup to restore from. Thanks 回答1: Then you need "only" initDB5.ora file (or spfile.ora).

问题 Is there built-in function in Oracle DB 11g r2 that could parse varchar2 variable to table? Opposite of listagg or wm_concat . I found only Tom Kyte 's method dated 2006: with data as ( select trim(substr (txt, instr(txt, ',', 1, level) + 1 , instr(txt, ',', 1, level + 1) - instr(txt, ',', 1, level) - 1)) as token from (select ',' || :txt || ',' txt from dual) connect by level <= length(:txt) - length(replace(:txt, ',', '')) + 1 ) select * from data; I think Oracle must have simpler way. 回答1:

问题 I installed Oracle 11g Release 2 on a windows 7 laptop and created a database using DBCA. In one screen there is an option to create sample schema but it was greyed out so I could not select it. I searched the dbhome\demo\schema\human_resources directory but there is only one file in it - hr_code.sql(It created triggers in hr schema). There is no sql to create hr schema or populate schema tables. I searched the net to download the scripts but no idea where to get them. Can you help me 回答1:

问题 Oracle 11g has certainly improved usability of CLOBs, having overloaded most of the string functions so they now work natively with CLOBs. However, a colleague was getting this error from his code: ORA-22828: input pattern or replacement parameters exceed 32K size limit 22828. 00000 - "input pattern or replacement parameters exceed 32K size limit" *Cause: Value provided for the pattern or replacement string in the form of VARCHAR2 or CLOB for LOB SQL functions exceeded the 32K size limit.

问题 I have the following data Base End RMSA Item 1 RMSA Item 2 RMSA Item 3 RMSB Item 1 RMSB Item 2 RMSC Item 4 I want to convert it to the following format Key Products RMSA;RMSB Item 1, Item 2 RMSA Item 3 RMSC Item 4 Basically, those with similar results should be grouped into 1 line. However, I can't seem to get it to work using listagg, etc since I'm grouping on two columns. Is there any way to do this with a direct Oracle query? 回答1: You can use listagg() window analytic function twice as

问题 I have the following data Base End RMSA Item 1 RMSA Item 2 RMSA Item 3 RMSB Item 1 RMSB Item 2 RMSC Item 4 I want to convert it to the following format Key Products RMSA;RMSB Item 1, Item 2 RMSA Item 3 RMSC Item 4 Basically, those with similar results should be grouped into 1 line. However, I can't seem to get it to work using listagg, etc since I'm grouping on two columns. Is there any way to do this with a direct Oracle query? 回答1: You can use listagg() window analytic function twice as

问题 I'm following the tutorial from oracle docs. And I see that the preferred way to manage the backup/recovery processes is by using RMAN. I've started practicing with it (I mean, by sql*plus cli). But I really don't see how I can automate the process. Then I saw that in sql developer dba panel, there are some options for working with RMAN. I really don't understand how to use them (I didn't even create e backup) and I couldn't find any tutorial about that. So can somebody tell me the way how to