Index: reference/docs/conversion/sakai_10_0_oracle_conversion.sql
===================================================================
--- reference/docs/conversion/sakai_10_0_oracle_conversion.sql	(revision 313771)
+++ reference/docs/conversion/sakai_10_0_oracle_conversion.sql	(working copy)
@@ -888,10 +888,10 @@
 ALTER TABLE QRTZ_SCHEDULER_STATE DROP COLUMN RECOVERER;
 
 -- Increase size
-ALTER TABLE QRTZ_SIMPLE_TRIGGERS MODIFY TIMES_TRIGGERED BIGINT(10) NOT NULL;
+ALTER TABLE QRTZ_SIMPLE_TRIGGERS MODIFY TIMES_TRIGGERED NUMBER(12);
 
 -- Increase size
-ALTER TABLE QRTZ_CRON_TRIGGERS MODIFY CRON_EXPRESSION VARCHAR(120) NOT NULL;
+ALTER TABLE QRTZ_CRON_TRIGGERS MODIFY CRON_EXPRESSION VARCHAR2(120);
 
 -- ------------------------
 --
@@ -904,7 +904,7 @@
 	ASSESSOR_USER_ID	varchar2(255) NOT NULL,
 	ASSIGNMENT_ID   	varchar2(255) NOT NULL,
 	SCORE           	NUMBER(11) NULL,
-	REVIEW_COMMENT         	varchar2(6000) NULL,
+	REVIEW_COMMENT      clob NULL,
 	REMOVED         	NUMBER(1) NULL,
 	SUBMITTED         	NUMBER(1) NULL,
 	PRIMARY KEY(SUBMISSION_ID,ASSESSOR_USER_ID)
@@ -920,8 +920,8 @@
 -- --------------------
 
 -- https://jira.sakaiproject.org/browse/SAK-24207
-ALTER TABLE chat2_channel ADD COLUMN START_DATE TIMESTAMP NULL DEFAULT NULL;
-ALTER TABLE chat2_channel ADD COLUMN END_DATE TIMESTAMP NULL DEFAULT NULL;
+ALTER TABLE chat2_channel ADD START_DATE TIMESTAMP DEFAULT NULL;
+ALTER TABLE chat2_channel ADD END_DATE TIMESTAMP DEFAULT NULL;
 
 -- -------------
 --