15.4.2.2 The DBMS_OFFLINE_OG.BEGIN_LOAD procedure Call the BEGIN_LOAD procedure from the new master site before you begin importing data. The specification follows: PROCEDURE DBMS_OFFLINE_OG.BEGIN_LOAD (gname IN VARCHAR2, new_site IN VARCHAR2); These parameters are identical to those described for the BEGIN_INSTANTIATION procedure. See that section as well for an example of using the procedures in the DBMS_OFFLINE_OG procedure. 15.4.2.2.1 Exceptions The BEGIN_LOAD procedure may raise the following exceptions: Name Number Description badargument −23430 gname is NULL or ` ' missingrepgroup −23373 Group gname does not exist wrongsite −23433 Raised if BEGIN_LOAD or END_LOAD is executed at a site other than new_site wrongstate −23431 Group gname is not in NORMAL state at the master definition site 15.4.2.2.2 Restrictions The procedures in DBMS_OFFLINE_OG must be called in the appropriate order from the appropriate sites. The example under BEGIN_INSTANTIATION illustrates the proper use of this package. 15.4.2.3 The DBMS_OFFLINE_OG.END_INSTANTIATION procedure You call the END_INSTANTIATION procedure from the master definition site to flag the end of offline instantiation. The specification follows: PROCEDURE DBMS_OFFLINE_OG.END_INSTANTIATION (gname IN VARCHAR2, new_site IN VARCHAR2); These parameters are identical to those described for the BEGIN_INSTANTIATION procedure. See that section as well for an example of using the procedures in the DBMS_OFFLINE_OG package. 15.4.2.3.1 Exceptions The END_INSTANTIATION procedure may raise the following exceptions: Name Number Description badargument −23430 gname is NULL or ` ' missingrepgroup −23373 Group gname does not exist nonmasterdef −23312 Routine is not being called from master definition site sitealreadyexists −23432 New_site already exists wrongstate −23431 Group gname is not in NORMAL state at the master definition site [Appendix A] What's on the Companion Disk? 15.4.2 DBMS_OFFLINE_OG Interface 696 15.4.2.3.2 Restrictions The procedures in DBMS_OFFLINE_OG must be called in the appropriate order from the appropriate sites. The example under BEGIN_INSTANTIATION illustrates the proper use of this package. 15.4.2.4 The DBMS_OFFLINE_OG.END_LOAD procedure Call the END_LOAD procedure from the new master site when you are finished importing data. The specification follows: PROCEDURE DBMS_OFFLINE_OG.END_LOAD (gname IN VARCHAR2, new_site IN VARCHAR2); These parameters are identical to those described for the BEGIN_INSTANTIATION procedure. See that section as well for an example of using the procedures in the DBMS_OFFLINE_OG package. 15.4.2.4.1 Exceptions The END_LOAD procedure may raise the following exceptions: Name Number Description badargument −23430 gname is NULL or ` ' missingrepgroup −23373 Group gname does not exist wrongsite −23433 Raised if BEGIN_LOAD or END_LOAD is executed at a site other than new_site wrongstate −23431 Group gname is not in NORMAL state at master definition site 15.4.2.4.2 Restrictions The procedures in DBMS_OFFLINE_OG must be called in the appropriate order from the appropriate sites. The example under BEGIN_INSTANTIATION illustrates the proper use of this package. 15.4.2.5 The DBMS_OFFLINE_OG.RESUME_SUBSET_OF_MASTERS procedure Call this procedure from the master definition site to resume replication activity for existing sites while the new site is instantiated. The specification follows: PROCEDURE DBMS_OFFLINE_OG.RESUME_SUBSET_OF_MASTERS (gname IN VARCHAR2, new_site IN VARCHAR2); These parameters are identical to those described for the BEGIN_INSTANTIATION procedure. See that section as well for an example of using the procedures in the DBMS_OFFLINE_OG package. 15.4.2.5.1 Exceptions The RESUME_SUBSET_OF_MASTERS procedure may raise the following exceptions: Name Number Description badargument −23430 gname is NULL or ` ' missingrepgroup −23373 Group gname does not exist nonmasterdef −23312 Routine is not being called from master definition site [Appendix A] What's on the Companion Disk? 15.4.2 DBMS_OFFLINE_OG Interface 697 sitealreadyexists −23432 New_site already exists wrongstate −23431 Group gname is not in NORMAL state at master definition site 15.4.2.5.2 Restrictions The procedures in DBMS_OFFLINE_OG must be called in the appropriate order from the appropriate sites. The example under BEGIN_INSTANTIATION illustrates the proper use of this package. 15.3 DBMS_REPCAT: Replication Environment Administration 15.5 DBMS_RECTIFIER_DIFF: Comparing Replicated Tables Copyright (c) 2000 O'Reilly & Associates. All rights reserved. [Appendix A] What's on the Companion Disk? 15.4.2 DBMS_OFFLINE_OG Interface 698 Chapter 15 Advanced Replication 15.5 DBMS_RECTIFIER_DIFF: Comparing Replicated Tables If you are not sure whether the data at two sites are identical, you can use the DBMS_RECTIFIER_DIFF package to find out. The DIFFERENCES procedure compares the data in a table at a master site with the same table at a reference site. After determining the differences, you can use DBMS_RECTIFIER_DIFF.RECTIFY to synchronize the tables. 15.5.1 Getting Started with DBMS_RECTIFIER_DIFF The DBMS_RECTIFIER_DIFF package is created when the Oracle database is installed. The dbmsrepc.sql script (found in the built−in packages source directory, as described in Chapter 1) contains the source code for this package's specification. This script is called by catrep.sql, which must be run to install the advanced replication packages. The wrapped sql script prvtrctf.sql creates the public synonym DBMS_RECTIFIER_DIFF. No EXECUTE privileges are granted on DBMS_RECTIFIER_DIFF; only the owner (SYS) and those with the EXECUTE ANY PROCEDURE system privilege may execute the package. Table 15.6 summarizes the DBMS_RECTIFIER_DIFF programs. Table 15.6: DBMS_RECTIFIER_DIFF.DIFFERENCES Programs Name Description Use in SQL? DIFFERENCES Determines differences between truth table and comparison table No RECTIFY Synchronizes comparison table with truth table No 15.5.2 DBMS_RECTIFIER_DIFF Interface This section describes the programs available in the DBMS_RECTIFIER_DIFF package. 15.5.2.1 The DBMS_RECTIFIER.DIFFERENCES procedure The DIFFERENCES procedure compares the data in a table at a master site with the same table at a reference site. The reference need not be the master definition site. The procedure stores discrepancies between the reference table and comparison table in a "missing rows" table, which the user must create. It populates the table specified by the missing_rows_oname1 parameter with rows that exist in the reference table but not the comparison table, and rows that exist in the comparison table but not the reference table. The table identified by the missing_rows_oname2 parameter has one record for every record in missing_rows_oname1, which identifies which site has the record. Here is the specification: PROCEDURE DBMS_RECTIFIER_DIFF.DIFFERENCES (sname1 IN VARCHAR2, oname1 IN VARCHAR2, 699 reference_site IN VARCHAR2 := '', sname2 IN VARCHAR2, oname2 IN VARCHAR2, comparison_site IN VARCHAR2 := '', where_clause IN VARCHAR2 := '', {column_list IN VARCHAR2 := '' | array_columns IN dbms_utility.name_array,}, missing_rows_sname IN VARCHAR2, missing_rows_oname1 IN VARCHAR2, missing_rows_oname2 IN VARCHAR2, missing_rows_site IN VARCHAR2 := '', max_missing IN INTEGER, commit_rows IN INTEGER := 500); Parameters are summarized in the following table. Name Description sname1 Name of schema that owns oname1. oname1 Table at reference_site (truth table). reference_site The global_name of site with truth table. If NULL or ` ' (default), truth table is assumed to be local. sname2 Name of schema that owns oname2. oname2 The comparison table. comparison_site or ` ', table is assumed to be local. where_clause Optional predicate that can be used to limit set of rows compared (e.g.,`WHERE STATE = `CA''). column_list Comma−separated list of one or more columns whose values are to be compared. If NULL or ` ' (default), then all columns are used. There should not be any whitespace after the commas. array_columns PL/SQL table of column names; either column_list or array_columns can be passed, not both. missing_rows_sname Name of schema that owns missing_rows_oname1. missing_rows_oname1 Name of table containing records that do not exist in both truth table and comparison table. missing_rows_oname2 Table that holds information telling which table owns each record in missing_rows_oname1. missing_rows_site The global_name of site where tables missing_rows_oname1 and missing_rows_oname2 exist; if NULL or ` ' (default), tables are assumed to be local. max_missing The maximum number or rows to insert into missing_rows_oname1 before exiting; can be any value > 1. comming_rows Commit rows inserted into missing_row_oname1 after this many records. 15.5.2.1.1 Exceptions The DIFFERENCES procedure may raise the following exceptions: Name Number Description badmrname −23377 The oname1 is the same as missing_rows_oname1 badname −23368 The sname, oname, missing_rows_sname, [Appendix A] What's on the Companion Disk? 15.5.2 DBMS_RECTIFIER_DIFF Interface 700 . DBMS_RECTIFIER_DIFF The DBMS_RECTIFIER_DIFF package is created when the Oracle database is installed. The dbmsrepc.sql script (found in the built−in packages source directory, as described in Chapter 1)