I am sharing this blog post to cover an issue i have faced while invoking “datapatch” after rolling back a patch:

logfile: /ora/dbt01/cfgtoollogs/sqlpatch/29789911/23573028/29789911_rollback_dbt01_2020Jul16_06_56_44.log (errors)
-> Error at line 2082: script md/admin/sdottsmeta.sql
– SP2-0310: unable to open file “/ora/dbt01/product/19.3/sqlpatch/29789911/23573028/&sql_script.sql”
Patch 31281355 apply: WITH ERRORS
logfile: &full_logfile (errors)

Can’t use string (“Could not open logfile &full_log”…) as a HASH ref while “strict refs” in use at /ora/dbt01/product/19.3/sqlpatch/sqlpatch.pm line 6175, <LOGFILE> line 2177.
Please refer to MOS Note 1609718.1 and/or the invocation log
/ora/dbt01/cfgtoollogs/sqlpatch/sqlpatch_39541_2020_07_16_06_55_39/sqlpatch_invocation.log
for information on how to resolve the above errors.

The workaround fix:

Add “set define on” at the end of script $ORACLE_HOME/md/admin/prvtrdfctx.plb